from what I have read about 9" wheels in the front is you want somewhere between 35 and 42mm offset. Sounds like you are trying to make wide mustang wheels fit. Those wheels will stick out. And spacers will only make it worse. I'm tring to go 265 all around (for the track) and the only success story on that I have heard (I'm sure there are others if you know of any speak up) on that big of a tire in the front is with 9" wheels with 35mm offset in the front (SCC projectZ). ( I currently run 255's on a 35mm offset 8.5" front without problems). Another problem is offset numbers seem to vary with different brands. Good luck. Good luck.
