I would suggest the following from my own experience as a starting point
Wishbones
Rear t-piece (back half of chassis),
Shock seal kit (plastic threads strip occasionally when refilling shocks)
usual e clips, washers, screws etc.
Shock towers (pretty strong but recently broke a rear one)
Rear gearbox case - can get damaged in big crash.
If I think of anything else I'll add it.
Chris