Opinions on aftermarket rear discs??
I'm running the Wilwood rear disc brake kit. This kit has an emegergency barke built into it as well. The thing is it's only made for the 8 3/4 or Dana, not the 8 1/4. I'm running their big disc kit up front as well.
If I were you I would just go get a big brake package for the front, I think you also need 16 inch rims to fit over their big disc. (11 3/4" rotors) But they do make a kit with 10 3/4 rotors for 15" wheels.