Welcome Orange,
I've never had trouble getting brake parts from either NAPA or my BIG truck parts store. I've done both my 56 8400 Wrecker and 57 10500 Fire Truck in the past few years and was able to get EVERYTHING new.
I also have one Allis-Chalmers tractor (future restoration project), it's a rare Un-Styled 1938 WC Speed Patrol Road Grader.
Check out my web site for tech info.
Mike B
