Here is the Corbin that came on my 750F from "back in the day". Seat was built on customers stock seat pan( Is this how it used to be done, rather than having a plastic seat mold?). No provision is left for the stock seat metal trim, so the holes in the cowl have been filled. It is by far the most comfortable and ride worthy seat I have used on a CB750, despite there only being an inch of foam up front.