Early SBP disc brake conversion
If the set-up you are going to use is the Kelsey-Hayes 4 piston set-up, all of the components will clear the 14" rallyes and the hub will go through the center. Other items you should have are the distribution valves from the donor car, new front to back lines for a disc car along with new front lines and hoses, and a new master cylinder. Might as well get the caliper lines while you are at it. I just did a complete swap on my 66 Cuda and my whoa power is at new, safer levels. I have the old SBP 14x 5 1/2" steelies, no problem with clearance. Good luck with your project, Geof