Guess My combo !

Thanks for all the input, I was just wondering if this may have been one of those 4 speed /6 cars produced, which means it may have one of those 3.09 transmissions, would one of the transmissions bolt to the bell housing?, I'm gonna be pulling the rear seat out to replace the package tray, hopefully there's a build sheet there.
Like I said before, I don't know who built it, but they musta known something, it even has the flip cap gas cap installed, they made a plate to fill in the thumbwheel radio that I assume it came with, doubt if the dash was transplanted.