Rear disc to drum conversion

I have a 95 Jimmy 2dr with the off road package 3.73 gear and g80 posi. I found a wrecked 2000 Blazer with rear disc brakes. What parts would i need to strip off the blazer to convert mine to rear disc. I want to keep my current rear (not the non-posi 3.42 rear that is on the wrecked blazer).