71 Dart Swinger wheel/tire combo suggestions

are you sure you don't want to move rear springs in? 275s out back are hard to beat.
Picture is a little washed out, but those are 225/60-15 fronts, and 275/50-15 rears. Fronts are V-rated Accelera brand, rear are Nitto Drag Radials. 15x7 front, 15x8 rear. Custom backspace on all.