7" wide wheels 4" bs? 6" with 4"bs?

dano said

Which A Body are you looking for fitment? It will vary.

On my 69 I use a 19mm offset on the front with 17x7. This comes out to ~4.75" back spacing.

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Agree to a point. But as for front suspensions it will be pretty much the same on all 73+ disc brake cars. The only exception is that the Dodge Darts and Dart Sports may have slightly less fender issues due to the fender openings being swept out.