Clarification on 73+ brakes

68cuder said

if those 17x8 with 5.5 backspacing will fit without any problems then Id love to run them with like a 235 or 245 without pushing it. as for the rear, I do not want to do ANY modifications, so whatever the widest wheel/tire i can, still on a 17"

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OK so just so you are aware... "without any modifications" what diameter tire fits fine on Duster might not fit Dart or B'cuda. All of the wheel openings are different. And since the rear end is angled slightly, what diameter fits fine one side of the rear might rub on the other side. If my memory serves, your closest point is the lower front of the right rear.
I don't know what is the largest diameter tire you can run on the rear of second gen' B'cuda. Good luck