The original bolts were special and had a carriage bolt type head BUT they were angled or the head was angled. Hope this helps.kc
The holes in the bar matched the bolts. It is kind of football shaped.
Yeah I knowIt is possible however, to mount the bar backward and to have the lights pointing up (don't ask!)
The easy way to determine which way the headlight bar goes on is to look at the hole for the V8 emblem. The holes have to be lined up vertical for the V8 emblem to fit properly.
I believe that you can obtain the correct special bolts from Michael Driskell at 3rdgenautomotive.com.