With all due respect, a roll bar and 5 point belts add a considerable amount of weight with no real advantage in performance. Pretty much all of the FAST cars running under 11.50 have a roll bar in place. In fact, with these cars, the stiffer you make the body, the harder it is to get it down the track.
MB
Yes Mike, but AFAIK the roll bar is a required safety item under 11.50, not an optional one.
