I just bought a 1962 Buick Skylark Convertible, and the brake petal goes right to the floor. Bleeding the brakes did not help. I am thinking I am in need of a new master cylinder, however, all over this big internet, I have searched and searched only to find ONE at an outragous ($150+) price. From my knowledge a master cylinder should only be betwen $30-$50. Can you please tell me what other years might be interchangeable with the 62 Skylark??? or where I can find a reasonable one for my car?