Practice landing on all fours . Sorry Mark, I just can't resist.
Anyway, the plastic parts are your best choice since it's a lot cheaper and easier to replace them.
Castle Neu 1520 on 6S LiPo Powered Gmaxx (Nitro Killer)
Predator with OS .21TM
Supermaxx with Mach .26
Revo with OS .18TZ
Kyosho ST-RR Conversion
Ofna CR with Tekin ESC/Motor (2)