it was quite hard to do. i got a large roll of black vinyl off of ebay for a few quid. first time i took the whole bumper off and took the grills out from there but it is possible to take the grills off without having to take off the bumper. i found the best way for it to be done was to do the sides first, (so do left, top n bottom corners and then the right) you will need a hairdryer to stretch the vinyl and the do the midsection and overlap it a few cm's. i need to do mine again as i rushed it and bubbles are appearing from when i put the grill straight back on. so make sure you leave the grills off for a while for the vinyl to stick properly!
i see from your profile you have wrapped your grill was this hard to do and any tips on removing it i got a 04 sportsback in akoya silver and want wrap the grill too any tips would be appreciated
many thanks Neil