I think it's still about CFM, so as long as that's worked out, the only other consideration will be turbo lag. I think the length of the ducting required would make this idea a non-starter. Better by far, I believe, would be nitrous or a supercharger driven directly off the crank. Either those or cubic inches. But there's something about a small engine delivering FAAAAAR too much power that would appeal to your son, I think, 58.
