What is needed to switch from sbp to 67 and later style wheels

My 74 dart parts car had 14" steelies on it w discs, im using this setup on my 67 cuda. i since upgraded the spindles to cordoba big brakes in front, and 10"x 2&1/2" cordoba finned rear drums, and the 78 cordoba master cylinder. Everythings a bolt on. Gives you the big bolt pattern, and gets rid of the wimpy lug nuts and studs. :) the reason i sourced all that stuff from one year model car was it was designed as a system, and a 78 cordoba weighs 3,975 pounds. My bcuda only weighs 2,700 pounds. A 1,200 pound difference. It ought to stop well. Lol

Matt