17s will go straight on a 16 valve with lowering, might rub a bit with people in the back.
17s will go straight on an RT but will rub at first, but it will form groves. if your gonna lower it then the rear arch needs to be gutted, took elite 7 hours to do mine! the front aint bad at all apart from turning and going over a bump, that doesnt hit your arch it hits the WING!