Hello, not sure what I have and need help. 1970 Cutlass, it is a 10 bolt rear with 9.5 inch drums. The issue is the wheel cylinders appear to be wagon from my research, lines come in at an angle and bleeder at the opposite angle. I need wheels cylinders but parts house shows a different wheel cylinder with the line and bleeder pointing straight down the axle tube and they appear to be smaller cylinders. I can't find any cylinders that look like mine, but there are some that look similar online that say they fit a Vista Cruiser.
Is it possible to be a wagon rear end but having Cutlass 9.5 inch brakes instead of the larger brakes? Can I use the 7/8 bore cylinder in place of the larger cylinder since I have the smaller 9.5 brakes?

 

A-body flattop wagons got the same 9.5 x 2 rear brakes as any other A-body. Vistas and Buick Sport Wagons got the 9.5 x 2.5 rear brakes.

 

Ok, I was told the wagons had bigger brakes on them. I can't find wheel cylinders to fit, the ones I have are 1'' bore but I've read they should be 7/8.