Before I give my very positive review below, I just want to say that they shouldn't put "no need cut" in the product title, because you DO need to cut a couple small parts of the case! It's not hard to do with a craft knife if you give it the right technique, but still, they should take that out of the title.
This was the first mod I had ever done, and I had no issues at all! I bought 2 sets and they were packaged well, with no missing parts. There was actually a part (double-sided tape) that was there that I didn't expect, but I figured out what it was most likely for, so that was nice.
The only thing I didn't like, and this is a small thing, was that the wires included for connecting the board to the battery terminals were longer than I wanted, so I cut one in half and stripped the ends. I'm sure you could use them as they are, but you would need to do more wire management in a small space, which I didn't want to do.
The screen looks amazing and it was such a great feeling when it turned on for the first time. I love it!