I went to a surplus store today after work to see if they had any brake line. They do. It is cheaper than buying it from a major store chain. My question is: What size?? I found 3/16", 5/16", and 1/4".. He showed me a whole box of fittings for the different kinds like Metric, and SAE. He also has sizes from 4"- 48" in the three sizes.. I know that the caliper is Mustang II. The rear axle is a Ford, but that is about all I can tell. Should I measure everything?? Thanks..