I believe Ron Butler race cars did the bars this way. If you look at vintage pics of Butch Leals 65 SS/B that he ran maybe mid to late 70s the cage is the same way. His pro stock arrow may be the same also. Butler did a lot of factory Chrysler stuff before venturing off and doing road race cars which is what he liked. Leals 73-74 pro stock Duster is the same way. His 65 SS/B car as if not already a winning car became the famous Barnett race cars SS/BA from what I'm told.