Heads for the 318

Ha ha ha, OPS! He missed the area you live in....it happens.

Looking at your specs, I'd fully port the 318 head with the valves you mention. The valve job "3 angle cut" is a typical cut. The MoPar Engines book makes a very good description with angles that it should be cut at.

IF you can find a 318 4bbl. car, check to see if it has 360 heads. You'll need to know the casting numbers. There often located under the head, inbetween the intake runners close to the intake manifold in the middle.