Where is the oil coming from??

I need some fresh ideas. After a 1/4 mile pass, I am getting motor oil on the passenger side inner fender and underneath the hood. I have ruled out the valve cover breathers and the dip stick. Valve cover gaskets looked good. It appears to be from the passenger side. Has anyone experienced this?

AJ/FormS said
In the early part of my engines life,while using 10/15W40, and when redlining it, it liked to blow oil out from the oil filter area. It was not ballooning the can. I figured it was blowing the shaped filter seat off the block. (no 90* adapter).

Agreed,
Seen warped filter seats a few times, --- warped due to filter to block adapter (adaptor?)
assembly issues, the gasket behind the filter seat is uber thick, but needs to be 'pulled down square' against the block.
Weak sauce web pic added below :D

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