Smarty with a TST Competition won't usually get you to all the way to 4K but it's a hot ass stack, just don't go above about level 7. Seen several with quadzillas melt or burn up the boxes while running and be crazy inconsistent with power. For consistent 4K the Redline and an EZ is hard to beat but it's definitely not the best for drivability. Smarty and drag comp is as smooth as you'll get and still pull hard from bottom to top. Just my
