Dart with b body 8.75

thanks for the advice. looks like I’m going to have to narrow the rear. And get new wheels.

If you're narrowing the rear you can keep your wheels
Running a 66 charger rear, with 18*10 wheels on my dart sport. Fills the wheel well nicely. I'm running 265/35r18 but need to go to a 45 or 50 profile for a bit more sidewall. Stock wheel wells no mini tubs. Wheels have -4mm offset which is real close to 4.5" back space on that particular wheel

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He has a Dart Hardtop, which doesn't have the flared out quarter panels like a Duster/Demon body style. Would probably stick out an inch or two on his car.