Sounds very similar to what we were talking about. Machinist was talking around a ..550-.600 cam and the lax heads from Hughes have a port job done to them. Did you run a factory rod and crank? I have a fresh 70 steel crank and am going to run a Manley or scat connecting rod. Car is also 4 speed with billet flywheel short tires and 3.55. How do you like the trw slugs? I've been told they're bullet proof just really heavy