Disc Brake Help

[cobra02]

Hi. First Post. Anyway, I have followed the posts on this forum and have purchased a entire 72 front suspension and brakes, along with the power booster. I would like to retain six lug all around, rather than having 6 on the rear and 5 on the front, or swapping the rear axles. Does anyone know of a part number or vehicle from which I can garnish the six lug rotors to use on the 72 spindles from my conversion front end. Thanks in advance.