kickinwing

Hello everyone my name is Nate, I am obviously new to these forums, I am also the proud new owner of an 86 GXE rx7. I picked this car up with a parts car for 600 bucks. There are a few problems which was expected, my first problem is, the transmission pops out of gear sometimes, but a mechanic friend of mine said he thinks it is a simple linkage problem. The other problems are just minor interior ones, for instance I am missing the piece that surround the radio and what not, so if anyone knows where I can get one of those that would be great. Now for my last problem, I am missing a drivers door window switch, is there anyway I can replace it or should I just swap the manual windows from the parts car to the good car.