Can you put a shovel head top end on a evo bottom end?

Yes, you can put a Shovelhead top end on an Evo bottom end, but it requires some modifications. The mounting points and oil passages differ between the two engines, so you'll need to make adjustments to ensure proper alignment and oil flow. Additionally, you may need to use specific gaskets and hardware to fit the components together correctly. This type of custom build is typically undertaken by experienced mechanics familiar with Harley-Davidson engine modifications.