Discrepancies in information on LA and Magnum series oil gallery plugs

All of the pictures in post #1 are with a 1968 318 as shown here:

View attachment 1716404691

I think that there are 2 pictures with a thrust plate from my 1990 360 in the foreground but the '68 318 is behind it. You can see above that the crank sprocket is the single row, stock design. 4 screws/bolts holding the plate in place with no drip tab. This engine was from a car and used in a truck so it has a rear sump pan painted blue along with the valve covers.
Ok. Wasn't sure. My theory posted above is purely. "tounge in cheek". I really would have no idea the difference in thrust plates. But, going back to your OG question, the majority of LA(early and late), and Magnum V8 that I have disassembled have had the plugs. I have no concrete evidence that it HAS to be one way or the other. I do have a SBE Magnum coming up, I might have to do some experimenting.