Help me decide - Big or small bolt pattern?

15 inch wheels are available in sbp through several vendors and not too bad price wise. But, if you want to keep sbp you are going to have to find either the early KH set up or go aftermarket. If you go 4.5 BP for disc what are you going to do with the rear? Plan on a Dr Diff axle and drum package on top of your front brake upgrade. We ran 4.5 on the front of my sons 73 Duster but had a 69 8.75 rear and we kept the 4 inch pattern. Ya 2 wheel bolt circles but we had 275/60R15 Nitto drag radials on 15x8 in the rear.

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