YOU should PULL your HEAD out of YOUR BUTT and learn something!!!
The start of building '69 cars is Aug 1, 1968. Therefore if the block was assembled on 10/29/68 it is surely (99.9999%) for a '69 car that could very likely have a SPD the first week in December 1968................
You should go back and read the ENTIRE post several times so that ALL the information SINKS in!!!!!