connecting rod direction

I have never seen a stock connecting rod with cylinder numbers stamped on them. Why would they? They are not specific to a cylinder and are all the same. It would require the factory to stock 8 part numbers when one would do. Plus the guys building them in the first place are using new parts so there is no need to keep track of a specific cylinder the a piston rod combo is installed into.

I would have to say some one was in the engine after it was orignally built.

I have torn down MANY Mopar engines that were numbered from the factory, many.
In fact, this little 89 318, that I just finished, was a 56k motor that had never been apart. Some of the rods were marked with numbers, and some with symbols barely recognizable. I made it a habit a long time ago to lightly scribe the top of the piston, including direction. It makes it so much simpler.