8 3/4 rear disc swap - ford ranger/explorer

I used a 1998 Jeep Cherokee. Only one hole needs to be drilled

Agreed. I got a set of rear discs off an early 90's Grand Cherokee 8-1/4 rear end. One hole has to be drilled for the mounting bolts (it only has four holes), and if my measurements are correct, the center hub hole may need to be opened up a bit. Easy stuff.