No, its not 525 lb/ft, it will be lower than that (490ish I believe). The 5spd didn't like to stand up to the higher torque ratings of the newer engines. A swap is possible, but if you are going for performance it would be worth your while to find late 99-00 truck. If it does have a 5spd that means its a VERY VERY VERY early 99 and will have a different turbo, smaller hpop (high pressure oil pump), smaller injectors, smaller intercooler, and a few different parts on the front suspension. Myself if it was a 5spd I would pass on the deal unless you can pick up the truck for a song and dance.