Here is a quote from the IS website:


Welcome to the Import Showdown Official Site

The Import Showdown is the southeast hottest sportsman drag racing event. Our event is by enthusiasts, for enthusiasts. We offer a unique mix of test and tune runs (open, non competition) with sportsman focused competitions. We offer classes that appeal to novices and daily drivers, all the way to serious competitors.

Our event is open is any make or model vehicle, import or domestic, running any setup, as long as they meet track safety requirements for Test and Tune. Competitions have cylinder, driveline, power adder, tire, and other regulations. We also allow motorcylces to run Test and Tune.