I've had a look on the ECP web for some spark plugs. Out of the list available, many of them also fit a (dare I say it on this site?!) Vauxhall Calibra 2.5 V6.
Since I had a blurr blurr 2.5 V6 last year, I also bought two sets of sparkies for it. Discount eBay special for genuine GM plugs.
My questions is.....Will these GM plugs I have work in the Audi?
I know it's shocking to use pants GM parts on an audi but funds aren't brilliant at the moment what with just having fitted out a new kitchen and buying a new bathroom. (Hate moving houses!!!)