...and I found an old bookmark I had for this:
B5 A4 01E Swap Info Thread
Some of the info on that swap may be of use if you already have the transmission and want to give it a try.
Also, you may want to chat with AngryCorvair on the GRM Forum. He put an Audi 6MT in 'Monzora' and had to
fab all the linkage. I bet he'd love to help out.