Scott
Are you in the owners group?
Contemporary used Wilwood, Girling and Dunlop calipers. Depends on what generation the car is as earlier cars are usually Dunlop. I just replaced mine with Wilwood 4 piston aluminum calipers and stainless lines. 100x improvement over original as they are 2008 technology. They are about $150 for each caliper and the lines are around $15. The direct bolt on bracket can be sourced from
http://actoncustom.com it is where I purchased mine.
Drop me an email
jdgagnon1@juno.com if you want to know more about the owners group, tech help and all the free stuff you can stand.
Jeff