Paul, If only your search was for Full Size '64 data, I'd be able to help pull everything together for you. But many of the codes were shared between body lines.
One of my best and closest buddies has a beautiful original '64 SS that he has ungraded "some". It's a 4bbl (220) 283, and it runs like the wind. One tickle of the throttle and it gets your attention and says, "ok,let's GO".
Verne