CTA intake-
www.ctamotorsports.com
K&N filter- anywhere
Custom exhaust OR SVT exhaust- look in the classifieds/go to local exhaust shops to price (2.25"- optimal performance)
Esslinger underdrive pulley-
www.zxtuner.com
Optimized throttle body-
www.buckshotmotorsports.com
Esslinger cam gears-
www.zxtuner.com
Computer chip-
www.superchips.com OR
www.diablosport.com You can find better prices for these on
www.kustomz.com and
www.ctamotorsports.com
Header (Focus/Cougar)- will need to modify it to fit
Some other "mods" stuff that doesn't necessarily give you gains but better for the car.
Ford Racing 9mm spark plug wires-
www.zxtuner.com
Autolite double platinum plugs- any auto parts store should have them
Accel coil-
www.zxtuner.com OR
www.ctamotorports.com
180 degree thermostat-
www.zxtuner.com OR some have found it at their local auto parts store
Mobil 1 synthetic- any auto parts store
B&M transmission cooler (ATX)-
www.summitracing.com
Another website to check-
www.spmotorsports.com OR
www.batinc.net