Is there such a beast that will pass track tech?

I've got a new convertable project that I'd like to take to the track and will definately be quicker than 13.49. Probably low 12's when all is done.

I think you can get away with swing out door bars that are removable but what about the rest? Perhaps the 4 point hoop and down bars (vert down bars, not thru the package tray down bars) can be welded solid but the door and harness bar bolt in?

My concern is keeping the back seat usable for passengers without the tubes close to heads.