Re: Connverting to an M6??>>
It's extremely expensive. A friend of mine did it to his Mustang and it was also very labor intensive. You need a tranny, a clutch, flwheel, clutch pedal, master cylinder, slave cylinder, shifter, center console, and maybe a driveshaft. You will also need a place to mount the clutch pedal. I'm sure they all come with same setup around the pedals, regardless of whether it's an auto or manual. It makes more sense for GM to make them all the same and just put the corresponding pedals in each car. I don't know if the T56 tranny mount is compatible with the A4. I don't mean to bust your bubble, but unless you are extremely attached to the car, your best bet is to buy a car with a M6 already in it.
Ryan