well actually the mach one is pretty damn fast....and the scoop is functional...stock auto cars runs high 13's....and i hve seen manual cars run high 12's on nothing more than drag radials.......so they are not slow and they are not going to lose to a stock 350zx...but a moded car is a different story.....my roomate had one last year and only took it to the track [email protected] the first run ever......so they are not that slow....