Not much of a diameter difference But I sold one to a guy in a zx3 and he said he noticed a little bit in performance and a little sound! I does follow the same line as the zx3.. But I recomend that yu go with an aftermarket Exhaust if you r loking for performance! by the tie ou spend the money to weld it on thre you can get an aftermarket system!
The mods you need to make to use an SVT header on a ZX3 are:
- relocate the oil dip stick.
- relocate or address the close proximity of the power steering line.
- fabricate the test pipe that goes between the header and the flex pipe.
Forum community dedicated to Ford Focus owners and enthusiasts. Come join the discussion about RS/ST performance, modifications, troubleshooting, maintenance, and more!