What to do with the rear quarters, 67 Dart prostreet

No idea on rear end but i habe 15x14 wheels with 7 inches if back spacing
I'm betting you have the required longer wheel studs too - - - - it is what it is - short of cutting the rear quarters to make them "Hemi Dart style" - - I can't even begin to imagine what else you might do.. kinda comes with the territory don't ya know