What to do with the rear quarters, 67 Dart prostreet

That's what I had to do with my '69 Dart that I built to run NHRA Super Street years ago. The rules allowed stretching the rear wheel openings but not raising them.
I ran a 14"-wide slick with everything tucked underneath. Looked great but was a hassle to have to jack the body sky high and drop the rear suspension to change tires.