To fit the MUCH wider wheel/tire we cut the fender lips and grafted in E46 lips.There are A TON of photos of this process but I am only going to post a handful below. If you want to see them all, check out the gallery at the bottom.
Donor fender
Cut and taped up
Tire/Wheel test fit
Cut and going in
Rear cut and tacked
Finishing up the rear
Front prior to cutting
Rear also prior to cutting
Front filler round one (FIGHT!)