I just got back from Performance Carburators, they could build me a 450 CFM holley 4bbl both draw through and blow through, $600 ither way. said that Blow through will make more power but the fuel preassure has to be refrenced with boost. Maby I'll go blow through and get a rebuildable 350 CFM Holley 2300 2bbl, and convert it to Blow through. Only thing I'll have to add then is a Blow Off valve. I'll probably get a new T3/T4 Turbo off Ebay, there is a guy who buy's true Garrets factory direct and sells them for about $350, the normal price for 1 of the Cheap China turbo's. probably intercool also.