I have used the kit for early Mopar cars pictured on his website. I got the kit from Plydo years ago.
It works really well, used 69 Fairlane rotors to get the 4 1/2 inch bolt pattern and late 70's mid size GM calipers. I did not tap out the holes, installed helicoil instead. Good thing about the stock calipers is Wilwood makes a light weight replacement, GMIII, for various discs thickness. I love this stuff!!