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Hello,

Yes, that should work. Please check the combustion chamber volume before you bolt it on, if the 5M-E head has larger chambers you will lower the compression ratio.. not good.

The 4M-E has 8.5:1 compression according to this list:
http://www.geocities.com/MotorCity/Pit/9975/dataBySubject/GasolineEngines.html

and the 5M-E 8.8:1 .. so it is very probable that the heads are indeed identical. :)
 
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