I really hope it's possible because I'd get it done in a second if you can. All i remember before is that you can't roll the arches, sure that's what i've heard anyways
You can but theres a little gap between liner and arch.
Its definatly possible just no ones had the balls to do it yet, theres a place by my thats fabricated wide arches for the rear of his golf looks the mutts nuts might investigate price.
someone on here got there rear arches rolled to fit 18s (rashcupra).