322

As for the 318 with the turbo, this eliminates the head port volume issue. When useing forced induction the port volume doesn't come into play, as much, but you can still have too large of intake port even with a turbo.

For the 360 I would use something in the 220-230 @ .050 duration and a split centerline in the 103/113 range. This should do what you want.