Who Knows ?
I was contacted by the fellow that inherited that boat a year or two so back, sent me pic's,
notice the valve covers, that style didn't come out until the late 80's, and it looks like a marine application, center rise, shift plate with assist, be interesting to see where it goe's, seems like the scimitars are on a roll right now, happens every 4 / 5 years, just after I have sold two of them
story of my life.