Advice on buying a '75 dart.

A bodies (Dart, Dart Sport, Valiant and Scamps) from ‘73 to ‘76 either had 7 1/4 or 8 1/4 rear ends. Since you know it has a slant 6, unless it has the HD cooling package or another option, it’s quite likely that Dart has a 7 1/4 rear end. Even 318 Darts had 7 1/4 rear ends. Surely the seller has a photo or two of the car, best to post those up so we can provide you with educated responss.