1965 Dodge Dart Charger

You sure find and point out some interesting details! I just checked my cars and all three Barracudas and the Valiant have the H type bolts for all four in the crossmember. Maybe someone replaced two of yours with regular bolts at some point?? The insulator bolts are all the recessed head style too. (although a couple havethe lip bent) Maybe someone put wahtever was laying on the floor at some repair job for your insulator too??

Anyway, thanks a bunch for posting your restoration details!