If you are looking to convert your late 70s to early 90's evinrude/johnson 50/60/70 hp carbureted outboard to fuel injection then this is for you. It is a direct replacement for the carburetors. It utilizes the existing butterfly valve, spring and retainers.
Ideally this should be printed for use in lost PLA/ABS aluminum casting.
Email me and I can create a custom throttle body for your carbureted outboard.
I have also uploaded the 3D CAD file. (Created in AutoCAD 2015)