I have a power brake master cylinder that was taken off my car in the early 80's. It has the 3/16" ports with adapters to match up to the brake lines. It still has black paint on about 3/4 of the outside and I think it may be original to the car. Does anyone know of '65 type master cylinders being used on early '66 cars (#1056**) It was replaced with a new Delco unit with 1/4" ports. Trying to decide which one I should have rebuilt.