Got this with some carb parts. It's the wrong primary shaft for the carb it came with. Thinking it is for a 4150, it came on a 3139 carb which is a 4160. Thanks for looking.
thanks guys, Eric Jackson of vintagemusclecarparts.com identified it. its' just an aftermarket shaft for either a 4150 or 4160, The throttle plate is an original from the 65-67 early but the primary shaft had been replaced.