Really, if the gt500 is this good with a solid axle vs a fancy magnetic ride, imagine one with a irs or similar suspension to the zl1. It already gave spankings out all over the board. By the way, im pretty sure the name zl1 was originally a drag car, in which it fails hard at compared to the gt500. If you want a track car you build a nice NA car like the boss and 1le, not a heat soaking blower car like the gt500 and zl1.