Trying to figure out if I have two oil leaks or an oil and transmission leak on my 73 Duster 318

So I’ve been meaning to tackle this for awhile but I’m having trouble figuring out the second leak. I know the one leak is coming from a poorly done piggyback oil drain plug. I’ve had the car less than a year and noticed that the drain plug is halfway out and won’t tighten. So I’ve bought a new one. Here’s to hoping they didn’t JB weld it on.

The second leak seems to be near the transmission but it sure looks, smells and feels like oil. There seems to be a bit of space/gap (circled in red below) where the liquid is coming from and then dripping from the low point (circled in yellow). Any ideas?

The oil and transmission fluid levels are fine. And both very clean. The drips maybe make a dime size drop once a day. For how clean the trans fluid is I’d expect it to be red on the ground but who knows how much oil it mixes with on the cars body from the first leak.

I’d imagine the right way to do this is really clean everything down and try to actually find where the leak is coming from or use a dye. Was hoping for best guesses first.

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First thought is that it has a rear main seal leak.
So far no indication of the trans leaking.
Of course it’s possible the leak is actually higher up, like a manifold leak, or valve cover, or even an oil sender.

Get ready to have people telling you to tear everything apart and rebuild it.:D

Clean it up and verify first,
but that sure looks like classic rear main leak.

Oldmanrick posted about the same.