1974 Duster wheels & tire size

after 76 the A body was dropped and the F body took over that platform, hense all 77 + cars finally got a 5 on 4 1/2 pattern and disc brakes

and yes , all pre 77 slant 6 9 and 10 " drum brake A bodies got the 5 on 4" pattern

Its' funny, I just talked to TheRamman at Carlisle Mopar nationals about switching my 1974 drum brake car w/sbp to disc with sbp and he said that I couldn't have a 1974 Duster with sbp drums on the front unless someone changed some stuff. He made me second guess myself as I thought he was the one person that would know this.