I would have beat you to it. Lol mine came damaged a few weeks ago. Now it's back ordered until 1/6. Yes it's 12mm x 1.25. How you planning on holding it when you drill it out?
The Gear jammer(manual) class is now the biggest class at our weekly local drags at Sears Point. I know that's not the case everywhere. I'm a road course guy myself, and enjoy the manual, autos are ok too. A sequential gearbox would be cool too.
The A6 isn't far off speed wise from the Camaro. All the tests I've seen are the 8spd Camero Vs the M6 which is slower then the A6. I'm going out on a limb here but the Mustang with a intake and tune might beat the Camaro. As far as modding goes I've read of guys running stock A6 into the 10's...