Okay, I had to go look up the article I used as reference. I am certainly not a Mopar expert, so I rely heavily on the technical info I read. So if this is wrong, sorry. :toothy9:
The second variable is caliper piston size. The slider-type calipers used on 1973-75 A-bodies used a smaller piston: 2.60" as opposed to the more common 2.75".
