I have a 1958 model 3200. I am upgrading to a dual master cylinder from CPP but retaining the stock drums. Truck has 1/4 inch brake lines to the front, 3/16 on the rear. I was intending to use new 3/16 line for the upgrade. The new master has adaptors for the 3/8-24 fittings on the 3/16 line. Will the 3/8-24 fitting work on the existing connections for hose/brake cylinders or will I need adaptors?...if so does anyone know the sizes?
