If you had a race class which was NA, 2800 lbs, door slammer and no cubic inches what do you think guys would build? I bet there wouldn't be a single SB car in the lanes. People would show up with mountain motors. It would basically be IHRA Pro Stock.

SB engines win if there is a weight break or a cubic inch limit or something along those lines. If there aren't any size limits then guys are going to show up with big engines.