Just saw an Evo VIII ad in a British magazine. It makes mention of a performance option called the FQ-300. Follow the links below to check it out. Basically an exhaust option.

This link describes the Evo VIII and its FQ-300 option:
http://www.mitsubishi-cars.co.uk/evolution/features.asp

This link is for the specs:
http://www.mitsubishi-cars.co.uk/evolution/range.asp