They're 18x9's +35 with 275/35/18's on the front and 18x10's +38 with 295/40/18's in the back. It also has Dr.Diff 13" brakes in the front which widen the track a bit, as well as a 68-70 B-body 8 3/4 in the back with 1/2" offset springs. Fenders are rolled and pushed, rear quarters have a "reverse tub" to get get rid of the bump in the outer wheelhouse and are also rolled and pushed.
The Dart front fenders don't do a ton for tire clearance, but it depends on the height of the tires. The Dart wheel opening is longer, so, the rear corner of the fender isn't an issue at all. And if you use '72 front fenders the lower front corner is actually a bit further toward the front as well. So there's a small improvement. But that being said, I was running the same wheels and tires up front when I had Duster fenders too.
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