318 Port match heads to Performer RPM Intake
The reg performer would of worked better but I went with the air gap to get rid of heat cross over, not to mention the performer has a slot for the choke heat riser, way to many ports that need block off plugs, and if I ever do change to a 360 down the line I can reuse this manifold instead of buying another. Since I already purchased it would like to port it to match the best I can even if its just a slight taper if this is possible.