Rear quarter lip mods?

BrianT said

I gained about 3/8" by trimming my quarters back with a cut off wheel and then smoothing them with a grinder. It's pretty obvious where the spot welds are located and I just used care not to go past them. If you didn't know that I did it, you can't even tell, unlike rolling the lip with a hammer and dolly.

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I did the same, I actually gained close to a 1/2" of clearance on my quarters just by cutting the lip back to the spot welds. I didn't roll it back any further, there isn't much point. The "bump" in the outer wheelhouse on the Duster/Demon/Dart Sport is the limiting factor if you cut the lips back to the spot welds, not the lip itself. The spot welds aren't perfectly in line either, I may have lost one or two taking it back a full 1/2". And like everything else I wouldn't assume all of these cars are the same.

You can see the difference in the width of the lip here in this shot