I think the hot ticket would be a Factory Five with an all aluminum ls376 (chevy). You can buy the engine from GM in a crate for less than $7k with warranty and the ecu is a little more and have a very nice running setup. What the guys are using in the RCR-SL.
Race-Car-Replicas - 586-329-1573 - Superlite Coupe Fran the owner could probably set you up if you tell him you are a fighter pilot, since he liked this post. I doubt it happened too, but....sounds good.