930 head rebuild+porting. Shop recommendations?
 

I am doing a top end rebuild on my C2T 3.3 turbo engine.

The plan is 400whp with CIS and supporting mods.

Looking for a machine shop with vast Porsche experience that can rebuild the heads and open up the intake ports to 36mm for better flow.

Should I be looking at larger valves or anything else while I am in there?

Please suggest some good machine shops that I can trust with this job. The location doesn't matter because I am willing to ship.



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