It seems that the G60 items are expensive for what they are! 167.00 Euros = 146.36 British pounds sterling + the dreaded VAT I'm sure, compared to the £98 + Vat for the standard wing... However a couple of points, If you were putting back together a Pukka G60, on a nut and bolt rebuild, then I at least would want the invoice showing the G60 wings part No's as part of the cars provenance, which I believe in the near future, will become more and more important on Mk2s...
My 2nd point about the price, to have a body shop modify a standard OE wing, to G60 spec could cost easily 1hr+ each wing, and end up nearly being on par with the G60 items, horses for courses really
For anyone wanting OE wings, but to G60 spec, but not bothered about the paperwork, then yes, go for the OE items and modify to G60 spec... looks easy enough

Thom