I had a 93 notch with stock rear and 4.10's. About 450hp with a s-trim and 3500 rpm stall runnin e.t. streets and never had a problem with rear end. Did start pullin bolts out of the lower torque box on driverside though.
Rearends are and easy fix i would make sure you have torque boxes reinforced though. Can get cheap set on ebaymotors if you type in torque box.