Just ring Keith who runs Day Mouldings to place your order first. He will ask you what type of wings you want (ie pre-67) and what cut-out you require (ie bumper slots, wing-top indicators, 1200 or tombstone light fittings etc). He will give you a date when they will be ready, then you take a trip down to his workshop in Boston (Lincolnshire) and you pay him when you collect them.
I have had a set of his wings on my Bug now for about 6 years and they fit perfectly.... Better than pattern steel wings in fact, as he used original VW Beetle wings when he made the moulds about 30 years ago!! He no longer makes them in the colour of your choice though. He now only makes them in a neutral cream gelcoat.
Keith is a really nice guy, so give him a ring.
Good luck with ya Bug.