wow that car got totally wrecked.
ok so how do you know it needs motor mounts? does it shake violently? becuase when I first bought my 240sx, the guy said it needed motor mounts, turned out one of the injectors wasn't firing and it was running on 3 injectors. Absolutely nothing to do with motor mounts.
Stuff on it is bent, that should already be a no no. You can find straight Z's for less than what he's asking.
Shift fork loose? c'mon, you can pop it into place right then and there, the tranny is probably F****d from when the turbo was on the motor and it was making a ton on HP. Guy probably drove it like a jackass.
Most drive train parts are interchangeable, but I would stay away from that car period. Unless it was free. It bent, engine doesn't run, and the tranny is on it's way out, back fee's etc....