Are you looking to stay with the5x4" bolt circle, or change to the 5x4.5" BC? Dual piston rules out anything factory, early KH were 4 piston, '73 and later A body was single piston. That rules out any factory based offerings, ie most of Dr. Diff, Pirate Jack's, Mancini's, SSBC, Scarebird, etc. Who's left? Wilwood, Baer, Hurst/Aerhardt (are they even around any more?), Strange... Check their sites and limber up that Gold Card...
