I made an adapter to install a Yamaha Rhino 660 carburetor on my 1994 Mitsubishi U42T 3G83 657cc engine. I made mine out of PETG. I'm sharing this so any of you with access to a 3D printer can easily adapt a new carb to your truck. I included the protrusion on the bottom left in order to occlude the coolant holes? on the manifold. It just requires a 2" id hose and two hose clamps to install. I can't upload a .stl file, so I'm just including a link to my thingiverse.com page. Let me know if you run into issues with it. https://www.thingiverse.com/thing:4944767