hey guys, im thinkin about doing a cat back exhust for my 94 na but ive run into some problems. first, i cant find a catback or axelback exhaust for an NA, there are only the turbo 3" exhausts. i asked some guys at the suprastore and they said they only make exhaust for the turbos?! he told me i woul dhave to go with a 3" exhaust but i was under the impression that anything bigger then 2.5 for a NA results in more of a loss then a gain. does anyone have experience with this?