Discrepancies in information on LA and Magnum series oil gallery plugs

So, I was thinking. I went back to the beginning of your post. The second pic is from the Magnum engine, yes? "Knowing" how manufacturing works, the 3.9 Magnum V6 came with a timing chain tensioner. Now here's where I put too much thought into it. That void would allow oil to spill onto the chain. Reason they did it on the left side is the chain would pull it around and up the other side onto the tensioner slide. If they did it on the right side, the chain would pull it AWAY from the actual tension side. So, if the made this special for the V6, why make two different versions. Just use the 6 on the 8. Idfk.....

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

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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.