[Fire General] shimp208:
In case anyone's interested in taking a look at the build prop here it is below:

# begin build properties

# autogenerated by buildinfo.sh

ro.build.id=LMY47O

ro.build.display.id=LMY47O

ro.build.version.incremental=37.5.2.1_user_521044820

ro.build.version.number=521044820

ro.build.version.name=Fire OS 5.0.0 (521044820)

ro.build.version.fireos=5.0.0

ro.build.version.fireos.sdk=5

ro.build.version.fireos=5.0.0

ro.build.version.fireos.sdk=5

ro.build.version.sdk=22

ro.build.version.codename=REL

ro.build.version.all_codenames=REL

ro.build.version.release=5.1

ro.build.date=Sat Aug 1 22:39:54 UTC 2015

ro.build.date.utc=1438468794

ro.build.type=user

ro.build.lab126.sign.type=release

ro.build.user=build

ro.build.host=ip-10-11-3-48

ro.build.tags=release-keys

ro.build.flavor=full_ford-user

ro.build.platform.version=

ro.fireos.target.extension=default

ro.fireos.target.product=full_ford

ro.product.brand=Amazon

ro.product.name=full_ford

ro.product.device=ford

ro.product.package_name=com.amazon.ford.android.os

ro.product.board=ford

# ro.product.cpu.abi and ro.product.cpu.abi2 are obsolete,

# use ro.product.cpu.abilist instead.

ro.product.cpu.abi=armeabi-v7a

ro.product.cpu.abi2=armeabi

ro.product.cpu.abilist=armeabi-v7a,armeabi

ro.product.cpu.abilist32=armeabi-v7a,armeabi

ro.product.cpu.abilist64=

ro.product.manufacturer=Amazon

ro.product.locale.language=en

ro.product.locale.region=US

ro.wifi.channels=

ro.board.platform=mt8127

# ro.build.product is obsolete; use ro.product.device

ro.build.product=ford

# Do not try to parse description, fingerprint, or thumbprint

ro.build.description=full_ford-user 5.1 LMY47O 37.5.2.1_user_521044820 release-keys

ro.build.fingerprint=Amazon/full_ford/ford:5.1/LMY47O/37.5.2.1_user_521044820:user/release-keys

ro.build.characteristics=tablet

# end build properties

#

# from device/amazon/ford/system.prop

#

#

# system.prop for generic sdk

#

ro.sf.lcd_density=160

#support opengles 2.0 3.0 is 196608

ro.opengles.version=131072

ro.audio.silent=0

# MTK, Infinity, 20090720 {

wifi.interface=wlan0

# MTK, Infinity, 20090720 }

# MTK, mtk03034, 20101210 {

ro.mediatek.wlan.wsc=1

# MTK, mtk03034 20101210}

# MTK, mtk03034, 20110318 {

ro.mediatek.wlan.p2p=1

# MTK, mtk03034 20110318}

# MTK, mtk03034, 20101213 {

mediatek.wlan.ctia=0

# MTK, mtk03034 20101213}

#

wifi.tethering.interface=ap0

#

wifi.direct.interface=p2p0

# Switching Menu of Mass storage and MTP

ro.sys.usb.storage.type=mtp,mass_storage

# USB BICR function

ro.sys.usb.bicr=yes

# USB Charge only function

ro.sys.usb.charging.only=yes

#smartvolume

ro.smartvolume.config=/system/vendor/smartvolume/ford/

ro.config.notification_sound=Verso.ogg

persist.panel.orientation=270

# maximum backup size for factory reset whitelist in kB

ro.recovery.wl.maxstore=524288

#uart kernel log

persist.sys.uart.klog.enable=n

# Audio Rotation

ro.audio.monitorRotation=true

#

# ADDITIONAL_BUILD_PROPERTIES

#

ro.com.android.dateformat=MM-dd-yyyy

ro.config.ringtone=Ring_Synth_04.ogg

ro.config.notification_sound=Verso.ogg

ro.carrier=unknown

ro.config.alarm_alert=Alarm_Classic.ogg

ro.build.lab126.buildtype=Nightly

ro.build.lab126.project=full_ford_ship_500

ro.build.lab126.build=448

drm.service.enabled=true

mtk_in_house_tee_support=true

ro.mediatek.platform=MT8127

ro.adb.secure=1

persist.radio.combo.chipid=-1

mediatek.wlan.chip=mediatek.wlan.module.postfix=_

ro.btstack=default

dalvik.vm.heapstartsize=5m

dalvik.vm.heapgrowthlimit=96m

dalvik.vm.heapsize=256m

dalvik.vm.heaptargetutilization=0.75

dalvik.vm.heapminfree=512k

dalvik.vm.heapmaxfree=2m

ro.mediatek.chip_ver=S01

ro.mediatek.version.release=ALPS.W10.24.p0

debug.log.base.path=/data/debug_service

debug.log.battery.enable=n

debug.log.battery.sleep=60

debug.log.temperature.enable=n

debug.log.temperature.sleep=10

debug.log.thermal_qa.enable=n

debug.log.dmesg.enable=n

debug.log.dmesg.wakeup=0

debug.log.logcat.enable=n

debug.log.coredump.enable=n

ro.sf.hwrotation=270

ro.smartvolume.config=/system/vendor/smartvolume/ford/

persist.sys.dalvik.vm.lib.2=libart.so

persist.sys.recovery.batt_level=25

ro.amazon.fosflags=0

persist.sys.ota.verified=unverified

persist.sys.last_verified_build=none

dalvik.vm.isa.arm.features=div

net.bt.name=Android

dalvik.vm.stack-trace-file=/data/anr/traces.txt

The big take away points are that it's running FireOS version 5.0 (Believe it will be bumped to 5.0.1 after OTA) based on Android version v5.1.0_r5. Additionally the exact Mediatek processor in the device is a MT8127. Kernel source can be found here from Amazon's Open Source page, for our device here.