M3 cylinder head gasflowed and ported where?
Discussion
I don't know whether or not either of these will be able to gasflow your cylinder head or not but they both have motorsport / raceprep backgrounds and should be able to point you in the right direction if they don't do it themselves.
http://www.geoffsteelracing.co.uk/
http://www.bmsport.com/services
http://www.geoffsteelracing.co.uk/
http://www.bmsport.com/services
Edited by Crackie on Tuesday 22 January 20:35
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