so this thread took some different turns.

so seriously, what are you trying to accomplish?
What is the budget we are working with?

If you're just looking for a decent amount of power, NA, and on the cheaper side, then you need to ditch the single cam idea. You can make some pretty decent power with them, but you're going to be spending a pretty penny to get it.
If you get your hands on a dual cam engine, you would have a much easier/better time trying to get parts for it and getting some power out of it, without breaking the bank on custom parts.
Budget is going to dictate how much power you are going to get out of it.
bored .40 over with high compression, ITBs and light weight everything, would get you some decent power.
What is your budget?
What are your goals?