Please help with Tire offset

I guess it depends what your intended use will be. Like old school big and littles, Tucked in or out. Tire size etc. Demons and Dusters have a generous wheel well compared to a Dart. My 73 Duster has a B-body 8 3/4 with 275-60-15s and Knockoff Ansen slots for that Arlen Vanke 70s look. They measure 15x8 with a 4 1/2 inch back space and give me the look I wanted. Yes the fenders are rolled but that's the way I got the car. SS springs round it out so the fender Mod was not really needed, Oh Well. I could have went with more BS like 1 inch more with tire to spring clearance still good. With that it would be a special order rim, and more $$$ and wait time. Off the shelf rims for this app are limited but possible. Next step is under chassis headers to get rid of the 14s in front for the Hooker fender wells.

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