Small port heads, big port intake. How bad?

I think there is a lot of good opinions on here. I have to agree that what is hurting you most is the fact that the plenum is too big and the runners are to big(volume wise). I think the mismatch in port shape(Or cross sectional area) is the least of your concerns. Even if you reshaped the ports in your heads to match the intake, it would still be too big an intake. IMO you should get a small port intake and a good 600 cfm range 4 barrel that is in proper operating condition and then tuned to your setup. That should net you the best mileage and all around powerband.