exhaust/spoiler q on mustang

[95StangDriver]

Yes, installing a new exhaust will give you better gas milage, but only if you increase the piping. Whether that's by keeping the single exhaust system with a larger diameter pipe, or upgrading to a dual system, which I've heard you can do on a Fox body LX. As far as the Saleen spoiler goes, I think you should do what you like, but it might look cool. Especially with dual chrome tips out the back...