NEW 2.3 motor?

Nobody makes n/a "crate engines" to my knowledge (at least not fuel injected ones)...I'd say the closest thing you'll find is a reman engine from a parts store.

Nobody makes a supercharger kit, and I personally do not know of any turbo "crate" engines but there may be one out there. The only real ready-to-run engines that I have seen are the carbed dune buggy engines that Esslinger sells and they are NOT cheap.