dean1484 wrote: Can you compromise and get to say 350 hp matching the 4.2 of that year and keep some semblance of reliability?
The A6 4.2 only came with the tiptronic, so you don't need as much out of the 2.7T with a manual to equal it. :)
As for safe, reliable boost level with 200K on the K03s... I dunno. Frankly, if they've gone that far then they're living on borrowed time already IMHO.