It will work, and the heads and cam will certainly wake that 318 up!! I've played plenty with 318's and through much tuning I've taken down much better built 340's. My favorite combo on top was the thermoquad and cast intake. It could be had at my local junk yard for 40 bucks (20 for carb, 20 for intake). Great gas mileage with the extreme spread bore, and that cast intake is so hard to beat. I've did intake swaps and let the E.T. slip be the judge, and that cast intake performs. Many roads lead to the same destination....