you have confused me a bit but what i thik your asking is will the rs2000 engine fit onto a zetec box? the answer is yes but only if you use the zetec flywheel and clutch though, dont worry about the crank sensor trigger marks cz the i4 has an internal pickup for that in the sump. i personally went from a 130 1.8 spec zetec to the i4 and much prefer the i4 but its manily cz it sounds so good!