Well, I have now been blessed with a 340 engine I would like rebuild with some performance mods since it's 50 year and an old tired engine. Now with machine shops charging heart attack inducing bills lately, it could be more practical to spend a little more and get some assembled aluminum heads. I'm planning on using performer RPM AIRAP I have in my intake pile and probably just a camshaft upgrade and probably bump the compression up a bit for pump gas and possibly keep the cast crank. I'm posting this here because the racers seem to know two things. How to save money and what parts not to put on a car. I'm not a fan of Edelbrock because of past problems I've had with their heads/carbs, so I would be interested in hearing some other choices.