Be aware that the folding mirrors on the MK5 are not great - they fold about 10mm in which is pretty pointless (doesn't offer any more protection) and they don't fold automatically when you lock the car etc...
This guy has put SEAT door controllers in to allow them to fold remotely (They are manually done on the mirror switch) but gives a good idea of how far they fold:
I decided £400 to £800 for a pair of mirrors was money better spent elsewhere. I fitted high power LED's in the mirrors instead for about a tenner - really pleased with them.