Could it be a Buick with a different front cover to move the distributor position? It looks like the top hose hits the motor in a slightly different position. Maybe a different cover to accommodate use in the truck?

413 wedge Chrysler
Turns out it is a big block dodge 413 ci Don't think their was a grand winner on this investigation. Lol.
First one to call out for Chrysler!Chrysler?
exhaust side of the head dont look like it though?
No.Will a standard chevy HEI fit in this engine?