Yep. Done from a Dealer. I came across one on PH the other month, and the advert had lots of information about the conversion.

I'm curious as to how well the Turbo would work with the Auto.

E: I doubt it would fetch much, if any more then a Manual Saph in the same condition. You need to bare in mind that a Auto Cosworth would narrow down the potential buyer quite a lot I would imagine.