My 2004 Yamaha R1 motor has the mounting points shown below, as well as two more tapped holes on the other side. Those were not really usable in my application, so I just used the side mounting points. Here's the best picture I could find. It's a bit tough to see, but on the right hand side I have some steel round stock welded to the HSS stubs and a hole drilled to let the threaded rod through. Then on the left side, I put round stock in and tapped it with I think a 3/4" thread. Then a threaded insert goes in and passes the threaded rod through that. Once in place, the threaded insert is tightened against the engine to eliminate any fore-aft movement. Basically just replicated the same system as was on the original bike.
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