If it's out of a 97 it will have disk brakes and any of three standard gear ratios - either 3.55, 3.73, or 4.10. The swap is pretty straightforward.. I'm actually in the process myself - just got back inside the house from painting the axle. You'll have to move spring perches and you can usually find spring plates with shock mounts on them... If you're handy you can modify your ebrake line to work. My best suggestion is to google the 8.8 swap.. It will show some great write ups.