273 & 318 Connecting rod weights

Steve, I didn't "THINK" the floating pins in the 318 went to 1970, but like I said, I am unfamiliar with when/what was used as far as rods. Also, keep in mind how Chrysler was famous for using "what they had" till "there was no more" and you can see how some overlapping occurred. So "I GUESS" you might just have either rod. Who knows? LOL