I have this SBC Hilborn that I picked up years ago. I was told it was from a gasser in 1960-62 or at least that is what the guy I got it from was told by the original owner. The canted pipes is the whole reason I wanted it. I have only seen a few of these over the years. Most of the Hilborns are straight pipes. Can anyone help me with what year this may have been made and how rare is it?