[Nexus S 4G Android Development] formula84:
So i did a Diff from Kwiboos v2 and NS4G v2 and these are the files that are Different. Not sure if this helps you at all.

-- D:\NS4G\ics-crespo-aosp-4.0.1-v2-unsigned : D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned -- includes differing files
.\boot.img	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	2c4793fb	1590d164
.\meta-inf\com\google\android\updater-script	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\build.prop	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\applicationsprovider.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\backuprestoreconfirmation.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	cf8390bb	1f01cb88
.\system\app\bluetooth.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\browser.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\calculator.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\calendarprovider.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\certinstaller.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\contacts.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\contactsprovider.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\defaultcontainerservice.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	181f0c50	a77a7c2d
.\system\app\downloadprovider.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\downloadproviderui.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\drmprovider.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	4fd08c76	7daa7c52
.\system\app\holospiralwallpaper.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	cc59a2db	7aaccffc
.\system\app\htmlviewer.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	3c7c2bae	fe88ea23
.\system\app\keychain.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	77ee0400	8244fafa
.\system\app\launcher2.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\livewallpapers.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	32d3ce3	460633ab
.\system\app\livewallpaperspicker.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\magicsmokewallpapers.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\mediaprovider.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	f39d636d	1a2cc171
.\system\app\mms.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	55589b9a	5c2f6eaa
.\system\app\nfc.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\packageinstaller.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	6cfa4bc7	30d6509a
.\system\app\phone.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\settings.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\settingsprovider.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\sharedstoragebackup.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\soundrecorder.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\stk.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	a63acddb	9ee56a76
.\system\app\systemui.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	92bbf10c	5a90884
.\system\app\telephonyprovider.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\app\userdictionaryprovider.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	3ca15596	412d275a
.\system\app\visualizationwallpapers.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	5a4cee16	8c0766a6
.\system\app\voicedialer.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	2e6cb512	dcaafd66
.\system\app\vpndialogs.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	c343f1e1	8173e9fc
.\system\app\wappushmanager.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	30af5498	d1db056e
.\system\bin\debuggerd	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	5b8a6134	8b7fcfc3
.\system\etc\apns-conf.xml	different (D:\NS4G\ics-crespo-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\etc\media_profiles.xml	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\etc\notice.html.gz	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\etc\security\otacerts.zip	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	a5c9207a	dac289f5
.\system\framework\am.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	2deb6856	69276780
.\system\framework\android.policy.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	565c917d	1365b1e5
.\system\framework\android.test.runner.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	311c6cf8	cfe07fec
.\system\framework\bmgr.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	e70bd7de	ea03aae1
.\system\framework\bu.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	31d0e7af	fd483d74
.\system\framework\com.android.future.usb.accessory.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	7c3f1a2a	4af3f80e
.\system\framework\com.android.location.provider.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	74259e6b	e0f5994a
.\system\framework\filterfw.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	77a7e2c6	247657f
.\system\framework\framework-res.apk	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\framework\framework.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\framework\ime.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	f19c9b40	1c7b4ca
.\system\framework\input.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	83c40e56	d99a519f
.\system\framework\javax.obex.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	c5487ee5	810edd54
.\system\framework\monkey.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	5045d1bc	332f4650
.\system\framework\pm.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	c60388b8	756ed13b
.\system\framework\services.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	efbf23d8	11ed85c1
.\system\framework\svc.jar	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	c0298324	8483e698
.\system\lib\libbcc.so	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	5366b456	e38bff7d
.\system\lib\libbcc.so.sha1	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	ca4e05d9	2a53d992
.\system\lib\libchromium_net.so	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	1c8932e7	efd2c2eb
.\system\lib\libmllite.so	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	c87a32fa	9a439afa
.\system\lib\libsecril-client.so	different (D:\NS4G\ics-crespo-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\lib\libwebrtc_audio_preprocessing.so	different (D:\NS4G\ics-crespo4g-aosp-4.0.1-v2-unsigned is more recent)	57850484	57db416f
.\system\vendor\bin\gpsd	different (D:\NS4G\ics-crespo-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\vendor\etc\gps.xml	different (D:\NS4G\ics-crespo-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\vendor\firmware\bcm4329.hcd	different (D:\NS4G\ics-crespo-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\vendor\lib\libsec-ril.so	different (D:\NS4G\ics-crespo-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
.\system\vendor\lib\hw\gps.s5pc110.so	different (D:\NS4G\ics-crespo-aosp-4.0.1-v2-unsigned is more recent)	????????	????????
-- 73 files listed