so easy.... I had this down to 30 minutes to have the bumper off and back on again, 4 bolts on the top of the bumper put steering on full lock, undo the 2 screws on the wheel arch line to bumper, then underneath, 2 bolt for the front of the undertray, then 4 bolts at front underside of bumper, and 2 inside each wing...., the first time I did it it took 3 hours as I was being careful not snap any bolts, but the bolts that were snapped I drilled out and used new rivnuts and also used new stainles steel hex bolts and anodised washers, you may need plusgas, really good stuff to get at those rusted on nuts