If you're going to stray from the OE style triple-tip exhaust you can't go wrong with the HKS Legamax Cat-Back. 3" main piping necks down to 2.4" entering the mufflers to then exit out of dual, 3.8" diameter Burned Titanium tips. Volume is almost doubled from idle through WOT over stock. This system emits a mostly smooth but deep tone. Drone is almost non-existent at highway speeds.