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I change diapers now
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14,444 Posts
What engine do you have?

- Drew
 

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Duratec or zetec?

I'm assuming duratec since the zetec is an iron block.

Top speed has done 650 to the wheels on the 2.5 block with 2.3 crank for a hybrid 2.4l. Your biggest hurdle to surpass that is the head studs. I think the Mazda guys have some ARP L19 studs available. Set you back about $400.
 
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