i have a good 94 rear tower I you need it and if it's just 1 drive shaft I know I've got a spare or 2. Wing mounts can be bought off eBay made by a guy in Korea (Pargu) if you serve YZ10 you'll come across his stuff.
Bumper again you can pick them up off eBay now and then there's a guy called Peter (Pedro150_0) that makes repo's, he's actually got a pair of rear arms nip ATM for a good price Ask him if he has any or if he can make you one tell him I sent you too
