It is from a 1964 and yes it is all original and the reason i want it is because i want a period correct engine for my car and i want something not many people use anymore. And a big bonus for me is becasue it came original out of a 1964 Chevelle as well. I do not want a 350 because of the fact is EVERYONE has one and i don't want a BB because i will have to change everything it the damn thing other than just a few connections throttle linkage and engine mounts.