To answer you ? about 32's, I've seen 33's stuffed onto the stock wheels on an SR. It wa a street machine, so I don't know how that combo will do offroad, but I think you would have no probs putting 32's on stock rims. As long as the shop doesn't care.

Rodney,95 SR 3.5 L, Rancho RS 9000's, 31x10.5-15 Bridgestone Dueler A/T's, OEM Rear locker My Monty in action!