I have a 1965 chevy pickup and a rear end out of a 1970 c-10 pickup. I went to the parts store today to get new rear wheel cylinders and the guy asked me if it was the ones with a 1" bore or the ones with a 1 1/8" bore. What is the bore and which ones do I need. I don't have the ones that came on the rear end. I think they were thrown away.
Thanks