Boatsides! There is a bigger gain doing this on fullsizes but I rank it up there with tires and lockers for performance advantage. Now, I did go full-retard on mine and knocked about a foot off the bottom of the cab but it makes a huge difference wheelin. It was a **** ton of work that took a long time but in the grand scheme of things was not that expensive. Good mod for a brokeass student with little cash and some time.