Another suggestion - BTR/Tom Welch has a roll bar that also qualifies as a NHRA roll cage due to the removable side bar. If you get into the elevens or have an MPH greater than 120 on a NHRA track you could be banned without the side bar. In other words, the Autoform rollbar could keep the car off of a NHRA rule enforced track.
I have a BTR cage installed on my car and it was a truly bolt-on install. It does not physically change the ergonomics of the car/driver relationship at all. I don't even know it is behind me. For integration into the car color scheme I had him powder-coat mine red.