Product review (4 stars): Pretty easy, Front part tab length needs to be a little longer.
I have the Samsung dryer model DV48J7700E.  I can confirm you do not need to take apart the whole dryer like it says in the instructions.  There is enough of an opening in the back.  The bad thing is as others have mentioned, the tab part on the Front exhaust pipe is about 1/4" too short to fit in the tab slot.  They must not have updated the kit for the newer models.  However, I don't think it is a deal breaker as the support is really from the tab.  I was able to rig it where I pushed the tab a bit so it just barely may be in...again, it wouldn't necessarily be weight bearing anyway.

I actually had room enough to pre-tape the Front and the Elbow once I fit all the pieces together first.  So I only had to tape the Elbow and Left pipe which is closer to opening, so that was not too bad.  Finally, be careful of the sharp pieces of the dryer and vents, I had a lot of mini cuts that could have been avoided if I were more careful.