[tiberio]

This is the guy you want to call...
Coy Miller Engines
450 hp 3.8 engines
http://www.coymiller.com/program/program_sc_stage2.htm

or

Ford Mustang 3.8L V6 Performance Parts FREE SHIPPING!
http://www.rpmoutlet.com/newv6m.htm
RPM OUTLET - WE TAKE THE GUESSWORK OUT OF PERFORMANCE PARTS! ® ... 1999-01 Mustang Cobra 4.6L · 1996-97 Mustang Cobra 4.6L · 1996-04 Mustang GT 4.6L 2V ...