My 68 had factory 4 piston calipers with 14" rally II's. This summer i changed over to 69FB single piston. Easy 1 hour swap. I was proud. Imagine how i felt when i tried to put the wheels back on and they wedged against the top of the caliper. Why would they make 2 different sizes? Luckly, i had a set of 15" Rallys laying around.
