Is this an oddity or just Mopar weirdness?

No doubt this is a replacement engine and done fairly recently. Cylinder hone marks are almost new looking and it has aftermarket CE 243 pistons. I plan to clean it up and do what is needed to make it a nice long block to sell. Hopefully it will be great for somebody looking for a 340 for a 72 car. In response to the post above, yes it is a true H code 340 4-speed VIN with correct fender tag codes. This is my first Mopar so learning a lot. Trying to get it back to as original as possible.