Time Slips & Disk Breaks (i guess)
I would go with stock 73-76 a body big bolt pattern discs for a cruiser. less hassles, good, and; cheap. you don't have to worry about adj. proportioning valves or parts availability in the future . I've done this a couple of times and it's worry free. There's more info at moparaction.com (all you need to know about it is there)