Travis,
Thanks a bunch for the history lesson and for clearing up the misconceptions. It wasn't that complicated, but some of that was forty years ago, and I've slept since then!
I really DO appreciate the refresher course!!!
Bill ('57 Chevy sedan delivery [hydro car], 220hp/283... H/SA. then M/SA, from 1964 to '71, with partner, Harry Sparks, who's still active in Div. V Stock.)