The Ark exhaust and Solo HFC were a great combo to go along with RRM's MRI and lightweight pulley. Great power and a beautious sound!! All those mods added up to about 190 HP and 186 lbs.-ft. of torque. She was smooth and steady well past 120MPH, though the stock Goodyear Eagle LS2s were a bit of a letdown, hence they were replaced by much superior Yokohama AS530s. No complaints about this sweet lil' Koup!