The most important thing you need to do is come up with a caliper for the reat that is a good match for the fronts. The Monte Carlo caliper that some existing kits use is a front caliper with 1 very large piston, and IS NOT a good fit for this system.

Next is the e-brake. Some people use a Cadillac caliper with e-brake but say it is a PITA to keep adjusted.

Good luck.