The Ford Racing cam would be a E303 or F303 although there are a bunch or other shelf grinds out that will work very well with a basically stock shortblock and the blower.
Personally I'd go custom and get the most bang for your buck, driveability and power. I can help you if interested.
Has anyone had any experience with the Comp blower cam 284HR-14? Was wondering how it would work with a stock bottom end. Piston to valve clearance...etc?