Several manufacturers in the States also make individual throttle-body fuel injection systems or conversion to carburetors and a stand-alone ignition that requires no ECU. Check with Marcy Motorsport www.marcymotorsport.com, Circle Performance www.circleperformance.com, and Al-Tech Precision www.quad4rods.com. Al-Tech Precision also makes throttle-body injectors and carbureted conversions for Zetecs along with various driveline conversions...rear drive, mid-engine for these engines.
Circle Performance is a hard-core builder of engines including Duratecs and has a growing inventory of aftermarket performance parts. Their current fuel injected naturally aspirated dry sump 180 pound Duratecs are making a respectable 340 h.p. on Methanol alcohol.