My car has 3" TTI exh Gus and you can see in this pic if you moved the springs in the springs would be right up to the exh tailpipes as it would be tight. Everything on my car is stock. You would need to go with a fuel cell most likey if you went with just moving the springs in and going with Cal Tracs or ladder bars. I had the Hoosier QTP 29 x 11 on my car with this stock wheelwells and they cleared but would rub to much on turns. For a race car only they would have been ok but not for me driving on the street. Thats why I like the 30 x 9's as they have plenty of room and dont rub at all. And hook fine for me. Good luck what ever you decide. Ron