Like everyone has stated before, it will probably be a heck of a lot cheaper and a much better idea to just sell your 6MT and buy a new or slightly used DCT M3. There is no way a local BMW shop or any other shop will have as high quality work as what the car comes from the factory. Does this not make any sense to you?
2012 Audi R8 V10| 6MT| Suzuka Grey| Dallas Performance Stage 1.5 Twin Turbo| 817whp pump| 950whp on 109 octane| GMG springs| Klassen M52R| Toyo R888R| GT Tails| GT wing| Black Optic Grille| CF everywhere| Satin black badges
2015 BMW X5 35d|Mineral White| Mocha
2017 BMW M3 ZCP| Mineral Grey