OK guys, it's starting to get there now!
I've been to Audi and they cannot get the parts as they're VW only and I've then gone to VW, who cannot get all the parts as some of them are commercial!
So, I finally got the following quotes from a VW Trade Centre, who can get all the parts and can give the best discount, although it's not much, as there's little in the price to start with (and I know they're telling the truth on this as I know the discount codes!).
Yes, it's sods law that the 0.681 is the priciest, but then I can't see the real point of it, when it's so close to a 90PS gearset.
There's no need to exchange the old cogs, so the change will be fully reversible.
What I'd ideally like to do is have one guinea pig for each of the ratios to make sure that everything will work for everyone and only then can we open it up to everyone.
There's no further discount to be had for bigger orders, so there's no real need to place a large order at first.
So, over to you guys!
Cheers,
Mike