looking for wheel cylinder size. 1965 gs non power. they list 7/8 or 15/16 for rear. then 7/8, 15/16, 1.1125 and 1 1/8 for front. pretty sure 1 1/8 for front.
If you have a different car to drive to the parts store, just pop one front and one rear apart and measure them. If I had to guess, I'd say 1.125 (1-1/8) front and .875 (7/8) rear.
Correct, 1-1/8" for the front. Regular Skylark was 1-1/16". GS and Sportwagon used larger front wheel cylinders, some parts books don't know that!
