I really want to put a roll bar in my model A coupe. The car currently runs high 12's and it will never see 11.5's which is when (I believe) a roll bar becomes mandatory. My question is- If I build a roll bar for the car myself, does it still have to meet the NHRA requirements for an 11.5 roll bar? They want you to attach the seat to the roll bar and they require a door bar as well. I'd rather not get in to that. Can I just put a mild steel 4 point bar in it and pass tech?