I have that same cam in my 318 with flat tops and 302 heads and i like it. its docile at idle but pulls strong right in that 2,000 to 4,000 range. you don't want to go with too big of a cam with a low comp. 318 as most will tend to bleed off cylinder pressure. i would get the stealth intake over the action-plus because you would still have a good intake to feed a 360 or whatever later on. plus the large volume of the stealth and the 318 size port windows help with the velocity. i would try and look for a used carb. and just do a rebuild on it to save some coin, maybe you might find an intake too.