A hydraulic cam in the 220 degree at .050" with about 110 degree lobe separation would do you fine. As for intakes, there are a few aftermarket aluminum jobs out there, and they are all good. I would go concervative on carboration and stay around 600 CFM. Cleveland headers may fit it. The only problem being they may not hang down far enuff to clear the firewall. If you can find shorty headers for the cleveland, that may well be the best ticket. There are some made for clevelands that have a center dump, being that the dump is between the center cylinders, and these might clear your mounts, with some slight modification.