Power gain comes from the bigger roller-bearing turbo, porting and port-matching the head and with the Western Motorsport digital fuel injection. The engine accepts 25 psi with very little trouble. The Western digital fuel manager and a manually adjustable injector pulse timer feed the fire and lick up near 400 hp. Next up, we're told, is a conversion to a Ford Zakspeed twin-cam engine said to pump out near 500 hp.