BlackCabMk5,

theres very lttle to weld when fitting wings on the MK5. They are two bolts holding the wing on at the door post(behind the splash guard) the only place to weld them is where the wing sits on the slam panel and and theres a small tab like thing that needs welding behind the indicator. its best to bolt the wing on first to check your happy with wear it sits, once your happy with the way the wing sits put a few tack welds on the panels and your finished. then put some seam sealer over the welds for the professonal look. as for removing the old wings i would recomend buying a spot weld drill bit, as using a hammer and chisel to break the spot welds would make the job a lot harder cause the panels under the wings twist and tear when you break the spot welds.