Ford Focus Forum, Ford Focus ST Forum - View Single Post - zx2 head on a zx3 engine
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Old 02-02-2013, 08:08 AM   #4
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I think this is what he meant.

"Hi I have a 2000 zx3 manual it runs good, but I really don't like the max rpm limit. I have a zx2 and the rpm limit is higher than the zx3, can I swamp the heads of the zx2 to my zx3? Is it possible to do? All the specs show it can be done. I want to know if someone has done it and how did it come out? What mods have to be done to make it work and does the ecu need to be tuned?"

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