Hy IBenDcars, I need a bit more information to help you out, what part number did Napa supply you with, what is the number that is cast/stamped into the old cylinder? My catalog shows the rear cylinders on a 62 60 series are only 1 1/2" bore, also they are listed as forward and reverse not upper and lower. I believe you said this cylinder was the lower , and it had a bleeder screw in it, so how was the upper cylinder supplied with fluid, with one port for the incoming line, and one with a bleeder screw in it?
