I'm considering ditching the A4 for an M6....I'm trying to fine someone with an M6 so wants an A4, to make it an even swap...

My question is: What all is needed from me for him, and for him for me...make sense?

here is what I have so far: Tranny, center console, pedals, linkage...I would also need to have my car flashed with a M6 vin, right?

one last thing, would I have to have my car re-programmed? I have Edit as of now, but would I lose any custom tunning that I have?

anyway, all info and advice would be appreciated

TIA

Alex