I am doing an M6 to A4 swap here in about a week. I know this is against the norm, but driving in city traffic sucks, and it would be nice to be able to go to the track without worrying about frying my clutch or breaking the rear end. I would much rather drive a stalled automatic than an M6 any day of the week. I did a similar swap on my '85 Firebird and I loved it! M5>700R4>TH400