Agreed Tech, so the application will depend on what kinds of demands your going to put on your engine?
In other words if you just putt around town listening to tunes, the stock one would probably do. If your going to have your foot in the car alot going after the local squirrilly mustang owner you will need more fuel boost?

I have another question, to you stepside 37, what is the purpose of boreing out an engine if it adds little hp? Doe's it not add chamber volume thus more fuel for ignition? I don't understand.

Hey fast chevy, do you also have a motorized covered wagon? I think I saw a show on TV with your rides.