[Missile Man]

I'm thinking of getting headers and need some feedback. I have an A6 and SLP LM II axle-back. Plan on getting the ADM CAI.

1. Will the stock exhaust (excluding mufflers) have too much back pressure to notice any improvement from headers alone?

2. How much of an increase in exhaust sound should I expect? The increase in sound is not a issue just would like to have an idea. Someone had mentioned that the increase is sound from headers would be minimal.

3. Are there headers that will bolt directly to the stock exhaust flange?

Getting a tune is driving these questions. Thanks for the input.