i made my own kit when I had a spec V. i just bought 4 GA amp wire from circuit city. I didn't do this for the hp gains. Just like everyone says, my car did feel more responsive after I was done with it.
TEAM DURATEC #512 ST CREW #100
2005 Ford Focus ZX4 ST
Focus Sport Cool-Flo v.1, Focus Racing Cat-Back w/ Magnaflow HFC, F2 Header, Focus Sport Tune 93 Octane, Saleen Suspension Kit, Rota Slips 16x7