I read somewhere I think Focusfanatics that the SVT manifold will add close to 20hp to a stock zetec. Anyone else read that? I don't know if it is true but if it was it would be a cheap 20hp. It wouldn't be hard to install at all, just bolt on then use a MSD rpm switch to activate it at the desired RPM. Tuning shouldn't be an issue assuming that the MAF detects the increased airflow. If not install an SAFC to compensate.

ATX MTX swap, rear drum disc swap, drilled rotors, ported intake, optim throttle body, CAI, 7.5L MAF, adj. fuel regulator, longtube headers, underdrive pulley, no EGR, low inpedence bigger injectors, 2002 Focus Swap