Please contact us about replacing your pressure carburetor on your Bonanza with fuel injection via an STC. This STC involves installing the Bendix Model RSA-5AD1 Fuel Servo, a flow divider, lines and nozzles. There is actually two STC's; No. SE23SW for the engine (E-185-1, -3, -8, -9, -11, E-225-4, -8, and O-470-4, -11, -13) and No. SA41SW for the application of the engine to the Beech Models 35 (Plain and A thru G) aircraft.