That's a great idea as far as I can see. I have a feeling it's easier to make a small carb bigger (big jets) than to make a big carb seem smaller (might just lean out after a point, don't know).

I have a book on turbocharging that had a bunch of carb setups. And one it showed specifically had a smaller than necessary carb to restrict the turbo. It sounds backwards but the turbo was making slightly less flow but at more pressure. That increased pressure put it more into it's operating range and made it more efficent. In the end the car made more power with what you'd think was a restrictive carb cause the turbo was more efficent and the air that was getting through was colder and denser (more power). Interesting idea.

theone61636 how are you constructing your turbo manifold and such? or more like turbo headers? I'd love to hear as well what pistons and rods and whatnot you plan on running cause I'm slowly working towards a turbo conversion.