68 Hemi Dart's at Mecum Indy

If I may chime in here...
Body was shiped to Hurst less engine, hood and fenders. Door on, glass out, according to Tarozzi.
To my understanding, only reason we are talking 383, is this was the only modell, both auto and 4-speed cars, had rear torque boxes. Not so much, but at least some reinforcement...

Convertibles had rear torque boxes. And front boxes. And I think reinforcing inside the rocker panel. Would have to look if that is referenced to in the notes.

I believe the S/S cars had front boxes.