My my issue was not installing the seat nor the grab rails. That was easy and I used the OEM hardware. The issue was the mold was off and my seat was a later seat after Mustang corrected the misfit at the front. The Mustang spacers float whereas the stock spacers set in the OEM seat pan and did not move. If Mustang could make a duplicate mold of the OEM seat base that would accept the OEM spacer I would try another. I had a Mustang Tripper on my Harley and that fit great but not the Mustang seat for the Honda.