Rear Disc Brakes

I was thinking about adding rear disc brakes to my truck but im not sure how big of a project that is. Anyone have any insight???

Thanks, Shawna

I got an 87 Toyota rearend with 85 Mustang SVO rotors and 79 Monte carlo calipers. Made brackets for the calipers to bolt to the axle and i bought a proportion valve from summit. Rotors and calipers i got at Oreillys.

on my 77 i used rear discs of a 90 or 91 isuzu 4wd pickup, made brackets to hold calipers... it all went pretty easy and easy to get parts for

how wide is the isuzu rearend to the mazda compared in inches?

no idea, i kept the mazda rear end, i just made brackets to hold the isuzu calipers