Help me identify this Ford engine for a customer...

It's a 72 highboy and it sure seems like the original motor. I'm guessing it's a 360 but not positive. It definitely has 5 bolts holding the valve covers on..
These rockers sure look like something out of a small block Mopar kind of..
they're definitely non-adjustable so I'm wondering if it's just tighten them down like on an LA Mopar?...
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@RustyRatRod