Originally Posted by
blacksti
yea basically i know the mr has magnesium valve covers or something like that with magnesium
All of the 4G63's in all of the Evo's have the magnesium valve covers and hollow cams. There is no difference between the engine in the MR or any of the other Evo's (in the same model year).
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-2006 Subaru WRX Limited
-2009 Chevrolet Cobalt SS