okay i have a 87 grand national.with 16ich black trans am wheels(the gnx clone wheels) okay i want to run slicks on my car for racing purpose only at the track! now i have 16 inch wheels on the front,do i have to run a 16ich slick.also size i was told was 26x10.5x15 or 26x11.5x16. i would rather go wit the 16inch.also does it matter what kinda 16icnh wheel i use??? plz help me out thxs alot greg..also i have alot of mods to the car to long to list no line lock though! plz help