Help with smoking/leaking fluids

OK so this is a problem that has plagued me for a while now. I've got some oil dripping onto my exhaust, which creates some really bad fumes once the pipe gets hot enough. The problem is I can't tell where exactly the oil is coming from. I DO know it's not coming from up top (head gasket and such)



I've included some photos:

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Any help would be appreciated. Could this be my tranny leaking?

Attached Images

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