Well that is a game changer. I've always thought that they were the same on the back end. Guess I'm still looking for a nice short box and now have a nice long box for sale.
Thanks guys for the info.

72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
Moparmarks Parts & Restorations
Desert Mopar Metal
Grand Jct. CO
970-261-7039
http://moparmark.com/
motormangj@gmail.com