Originally Posted by ilikebmxbikes
I am going to have the rear end on my car widened to accommodate my ER front end and allow me to fit 1M/M3 fitment wheels.
Don't you already have the ER widebody? I remember us both complaining about fitment of the front quarters.
Since I think you already have that, I'd just widen the rear arches. You can already fit 285 rubber in the back and a 10.5" wheel, but the offset is pretty limiting and won't allow the 1M offset.
Good luck, but I think you're crazy. Modding the rear panels is beyond what I'm willing to do as it's not fixable when it's time for re-sale.