Special Edition, Sound Enhanced, something like that. More flow, I think, and better sound than silver sets. Perfect sound for me, but I was considering gutted DP's for the power gain and quicker turbo spool. Didn't want to deal with getting my tune changed to emit the O2 sensor.

Speaking of power, take a close look at your trans fluids. Not sure of your miles, but extra power can really finish off your trans. On my list of power upgrades...new trans and TC.