Part No. provided by Audi is 026 905 205AC. I came across an AA variant, but since I don't know what these letters mean, I'm not sure it's compatable.
I've also come across the site Probe Distributors
(Link) who say they can provide a distributor for the NE engine, but there OE part number again has the wrong letters (this time BA on a VW part no.).
Darren