I retro fitted my folding wing mirrors but only came by them by luck, the guy on ebay didn't know what they where so I offered him £70 for both wing mirrors which had the auto tint glass in them
Unfortunately some stupid bint drove past my car and knocked the wing mirror forwards breaking the glass but fortunately not the wing mirror. I managed to find some more auto tinting mirrors on ebay after looking for ages and got them for £60 each, sold 1 to Golfman and I had the other.
Keep your eye out on the bay has they do come up from time to time.
Sorry to here about the damage though mate its awful when you come back and it either laying at the side of the car or hanging on for dear life
Darren