Looks like equal length headers ( far better than the 997.2), smaller cats, different primary muffler as well.
Interesting.

 

I saw that at least one after market supplier of 991 exhausts had a set for around $9000ish. I think it was FVD with a EU ticket of about 6500.

PSE is sounding like a much better option to me at this point.

 

I have a lot of ambivalence about this car. First and foremost it is a descendant of the 911, but the differences are enough to comment. When I think of 911, the first thing that comes to mind is a red over black 930. This is the 911 that got me into porsche. For that reason, the ideal 911 is tiny, low, uncluttered, and simple (both interior and exterior). This car does not meet that. I REALIZE this is faster than the old one and has better statistics, obviously, or else they wouldn't have made it. I am simply saying that this is not what a 911 sportscar should be, at least the DNA has changed.

Obviously, it is for the better as 99% of buyers just want to have a 911 with PDK, not some light, simple, efficient car. Porsche knows this, which is why this car will sell more than any before. Thinking of this car less like a sportscar and more like a GT car, this is epic. That rear end with those lights is perfect. This is the best GT car out IMO.