I need some opinions on which cam to use in my 318. Car is 1964 Valiant, I'm guessing around 3100lbs, 4spd with 8 3/4 / 3.91 gears, suregrip. Motor is stock bottom end, mid eighties 318, with 302 heads, Edelbrock Performer intake, jetted down 750 Holley, and Spitfire headers. Exhaust is not yet...