I,ve got an old Napa brake parts catalog. The rear brake is shown as 1 3/16. 51 up are 1 in. but that is for bendix brakes. The part no. for the 1 in. rebuild kit is #21. The new cylinder 51-55 first is 14497.
I,m going to make it to Bend Or. one of these days. George

They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum