OK , the Benz in the classifieds has brought up a good question on what is legal installation. In the past, if it did not say it was OK in the ruleset, it was not. Now is cutting the B-pillar legal to install nascar bars. In the case of a 4 door car, it is certainly stronger. But I cannot find wording that says that is an acceptable part of the car to cut. Only the door itself. Now if it were up to me we would be allowed to weld the cage to the unibody anywhere and everywhere. But I do not write the rules. Come on you rules nerds. Let this not be part of rules creep.
Chris