Hey,
Now we are on the run with the heads here, we have built a Flow bench and calibrated it up to a Superflow with copyed plates (300 and 500 cfm) the std heads came out with not to good numbers, air port speed was far to high over 400 fps in the runner floor. we have now ported out the intake roof a bit, and opened up the bowl, the valveguides are shortened and made over.. i wil now post pictures and flow data in this tred as we go ahead :) tips and hints on the way are always welcome :):)