Making power out of the 318

If I was you, find a decent running 5.9l magnum add a airgap and headers, and a cam similar to the 288/296 230/2xx .500" 108. Create cam made 400-410 hp. A 212/218 .480 114 made 350 hp so somewhere around there.
Red "x" time, no "run a 360" please. He asked about building a 318....