the mustang 1s work good with a 8inch rim with 4.5 backspace,ive ran a et street 10.0/15/28.0tall with no problems,now dont mistake that for a racing slick a 10 slick wont work without mods,the et street is about the same as a 9.0 wide slick/27.0tall
i did both with it i wasnt road racing or anything,but it didnt rub,we did race with it,i think i have a pic some where ill check and ad it