I want to put the '04 bullitt mustang rims on my '66 mustang, but i'm not sure what the backspacing is on the new rims. I know i can make up the difference with a spacer, but i want to make sure this is a feasible swap...i read somewhere that someone used 17x8 with a 4 3/4 backspace on a 66 and it works out nicely. i guess my question is, how close would i be to gettting there with the new rims...help!