I'm not sure here but don't the 69 drum brake masters have the same size bowls as well? If so how can you identify them, by part # ? Just curious . I wouldn't mind one in my Ragtop. I once read drum and disk were the same master back then just a different proportioning valve but you can't believe it just cause you read it. Rock auto show manual drum and power brakes no mention of front disk. Inquiring minds want to know. :eek: