If money was not a real big concern, I would compliment my new disk brake set-up with a power brake master cylinder. I was going to do it with my all 4 drums, but the guys at mcbrakes.com said it probably wasent a good idea with the drums up front, alot of people I guess had problems with pulling to one side and unsatisfactiry performance. When I get some finances together, the disc brake upgrade is my next big project, and I am going to get the power brake booster with it. I did however upgrade to the dual chamber m/c from a 67, which like the other poster said, will work fine with your car. I went ahead and replaced the front brake lines in there while I was at it. Picked up some pre-bent ones for about $30.00, stainless steel. Good luck! James.