Hey,
Well you will notice just a hair in the peformance side, but not much to really talk about, and I hd no chancge in gas milage differance, but it makes yur exhuast just a little louder. Ford told me it would be around $300 bucks, but if you don't want to get rid of the cat. I would not buy a factory one, I would get a unv. one.
Hopes this helps. later Nick


99 tour se zetec
complete painted interior, BN white gauges,
4.5in. fab. aluim. cold air in take, no res, ported man. hooker header areo chamber muffler, 9mm Ford Racing wires, and bla bla bla more stuff,
painted rear ref., mesh top and bottom, L.E.D w/direction turn signal, trible flames down both sides, L.E.D. washer fluid lights, AND Alot More