had my MK4 3i done proffesionally at a classic car restorers, took it right back to the original primed surface. including inner wings etc etc. then plenty of etch primer,seam sealed, then several coats of shutz and then a few coats of the body colour. its now at the bodyshop getting the full resto job. i did consider doing it myself and buying a rollover jig....but time and space were a problem. i take my hat of to the guys that do it themselves!