my 8" ers rub on the fenders in the rear if u rolled them they would be fine, but for 8.5" ud need fender flares and cut away some of the stock fender to get them to not rub...

You can have it cheap, fast or good. Pick any two.

If you want it cheap and fast, it's not going to be good.
If you want it cheap and good, it's not going to be fast.
If you want it good and fast, it's not going to be cheap.