I have a question. I have a 2000 Gt with 18 inch rims. The fronts are 18x8.5, and I am buying Saleen rotors and calipers, they are 13 in. My friend tried them on his 17x8 stock gt wheels and did not fit. The saleen wheels are 18x9. Will they fit on my 18x8.5? Any Help or thoughts???