[Mike C]

GM used the Corvette master cylinder on the JL8 cars. The calipers weren't exactly the same as the vette calipers, but functionally the same.

I have built a reproduction HD type brake setup for the back of my 68 Camaro convertible but haven't mounted and bled all the parts yet. I got repro JL8 brackets for the front and repro 'vette calipers all around. Because of the staggered rear shocks you need two right side Corvette rears and not a complete set of 4.

Drums have residual pressure valves in the master in some installations and that wreaks havoc on a disc conversion. If I was doing a 4 wheel disc swap on my own truck I would use a Corvette master and a Corvette combination valve or as I mentioned above, the late 70's early 80's 4 wheel disc 2nd gen F bodies.