Well, cleaned up the oil pan and tried a plug that's supposed to fit. It doesn't. I think this pan has been repaired before. I've never seen anything quite like it but it doesn't look stock to me.
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That's the inside.
Pulled the valve covers. Everything looks pretty clean.
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Then I started cleaning the valve covers and found this.
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I posted a thread to ask about it. It's the driver side valve cover.
So that's where I'm at. I actually ran into a guy at the parts store tonight who speaks my language. He drives a really nice 91 centurion. Cleanest one I've seen around here...and he stole it. [emoji21]. No miles on it. Didn't see snow until 2013 I think he said. Why can't deals like that ever fall into my lap.