Hey, I have a 97 Mustang GT 4.6L. I am looking to get new tires and wheels for autocross and possible future road racing. I am looking for 200TW tires the same on all 4 corners. Currently it has the factory 17x8 wheels. I am looking at some 18x9 wheels and am not sure about the offset. I am struggling to determine the offset when figuring which wheels to match with the tires. Also, I am debating about the width of the tires as well. I am trying to get away with minimal modifications to make everything fit. One issue I have been running into is that the car has the Cobra drums and calipers on the front and the rear end has been swapped with the 2000 Mustang GT rear end. I don't know if that makes any difference when it comes to clearance issues on the rear. I am looking for some advice and thoughts about getting this job done and it actually work well for autocross and road racing.