Can a evolution motor fit the mount in shovelhead frame?

It is generally possible to fit an Evolution motor into a Shovelhead frame, but it may require some modifications. The Evolution engine is narrower than the Shovelhead engine, so you may need to use adapter plates or spacers to fill the gap between the engine and the frame. Additionally, the Evolution engine has different mounting points than the Shovelhead engine, so you may need to modify the frame to accommodate the new mounting points. Finally, the Evolution engine has different exhaust ports than the Shovelhead engine, so you may need to modify the exhaust system to fit the Evolution engine.