If you have a dirt car, it will still work indoors. You will need to change the bars to pavement type plus springs around the 300 range. Set the bird cages for pavement pick up if they are combo type. Obviously you will need indoor pavement tires. You will also need a gear set in the 30's if you have a 3:78 rearend. For specifics, I would call Don Kenyon at 3K Racing: 765-482-4273