Stock 360 Upgrades for Crusher Cuda?

Wow! You guys are all over the place I think you have a pretty good grasp and a pretty good start.. your camshaft selection should suit you just fine. if you don't care about gas mileage by all means put a 750 double pumper on it it's Overkill at this point in my opinion. Headers are one of the best performance improvements you can do if you're in tune but are only as good as the tail pipes and mufflers that are stuffed on the end of them. Switching stuff around and buying new parts aren't always a noticeable improvement especially if they don't sing in harmony with the rest of the build. You could achieve your performance goals with a factory360 or 340 4 barrel manifold. Make sure to have a good ignition system and a hot coil to handle all that extra fuel.