S15 Spec S Automatic Exhaust?

[been_and_gone]

I've got a 1999 Spec S s15 and it's automatic. What would be the best exhaust/muffler to install? At the moment it still has the original factory exhaust, i'm not looking to change the entire system just the tip. Seeing as it's an automatic, how would this sound? I've been looking at a 2.5" or 3" carbon fibre one (link below), anyone have any advice or the best suggestion for an auto?

Cheers.

http://www.trademe.co.nz/motors/car-parts-accessories/performance/exhaust/auction-413095195.htm

 

[spoonman]

what i had on my old spec s was a fujitsubo header going into a 2 & 1/4 pipe, 1 resonator and then a N.A. rear muffler ( not a turbo straight through ) it was not too noisy and actually gave a power increase