I used to have an 89 Mazda Mx-6 GT Turbo with custom turbo upgrade, front-mount IC, i/h/e, among other things. Had it turned up to 10 lbs on stock internals. Ran a 13.8 @1XX. Pretty damn quick car. Don't really know too much about the Mx-3, though. I can say that they're ugly, lol.