Connecting Rod Mystery

Well, I got into my '72 318 and discovered a bit of a mystery. The connecting rod casting numbers are 3418635 which, to my best knowlege, are press fit rods from 74-up 318s and all 360s. What is even more of a mystery is that these rods have floating pins. There is a bushing in the small end.

Also, there is no oiling hole on the small end of the rod. Do small block floating pin rods normally have an oiling hole?

I do not believe that this motor has been apart. If it has they covered evidence of it very well.

Does anyone have any comments on this?

Thanks