I'm about to rebuid the 307 in my 70 chevy. I'm having the engine cooked and rebuiding it entirely. I'm looking at putting some performance parts on it. Nothing too wild. I'm looking at the holley carbs but I'm not sure if I should go with 570 cfm or higher. Also going to put new manifold, pistons, camshaft, etc... any suggestions on what to do or where I can pick up these parts at a reasonable price is appreciated.
