Spent two full days just on the door guts/window install. The first thing was the outer stainless trim that goes at the top of the door line. That was nerve-wracking! There are these tiny little plastic clips that go on the screw-in studs. I covered the top of the door in blue masking tape and then used a rubber mallet to tap them into place. It's something of an IQ test as you have to have certain ones engaged before you can try the others or the ones on the curves at either end won't get close to engaging their clips. That was worth about 3 hours!
After the stainless came the inner door window fuzzies - also NOS GM parts. Funny thing is both the originals and the NOS ones were missing a mounting hole that needed to be drilled. Looks like the originals had the extra hole in the fuzzies drilled out on the assembly line.