Im using like 95 Impala SS rotors with Gbody (metric) calipers. I bought a set of brackets from Speedway Item #: 91641010. I used the rubber hose off the front of a Gbody car and ran over to my new hard line. Built a bracket to joint the too and clip it on. I used a 70 Corvette master cyl for manual brakes. Bolts right on and uses the stock truck rod. I ended up with around $200 dollars in the rear set up. I got all my parts from Napa. Here is the link to the caliper brackets.
http://www.speedwaymotors.com/GM-Cal...kets,3346.html