for a 72 swinger, they are listing coupe,(from Valiant.org.), at 108 and the hard top at 111. My question is, besides the wheel base, what is the diff. between a coupe and a hard top?
There is no coupe (2 door sedan) in '72 only 2 door hard top and sedan. I may be mistaken but I think the Mopar chassis book list's the hard top at 108" wheel base. The sedan has a different windshield and rear window.
I just checked my copy of the Standard Catalog, and the Demon WB is 108 (same as the Valiant/Duster), and the Dart (hardtops and sedans) is 111- as is the Scamp.
Right, and the first "column" of figures refers to the (Dart) Demon coupe, which is basically a Plymouth Duster with rhinoplasty. The "real" Dart, whether a 2-door hardtop or 4-door sedan, share a chassis.