Leak from Alternator mounting bolts?

I have a 84 Slant 6. I have a oil leak at the front passenger side of the engine. I checked the oil pan bolts they are all tight. I suspected the timing chain cover. But after closer inspection it looks like it's leaking higher. But the valve cover doesn't seem to be leaking. I read that the bolts that go into the block for the alternator mounting can leak.Does anybody here know if this is a possibility? The engine is a Jasper reman and doesn't seem to be that old.