So here is an 81 Shovelhead frame that was already modified to fit an Evo when I bought it. I had an early late 80's factory Evo in it that had been through a wreck and the insides looked "like someone banged around everything with a hammer to get it working again." So I kept the internals for another day and scrapped the case. Had to go with a new S&S Evo as a stock Harley Evo hasn't been available for quite a few years now.