318 engine identification

That is a truck motor mount, do you know what size truck 100, 200, 300,?
And a truck oil pan. In forty years, I've never heard of a four bolt 318 truck engine?

People will say anything to sell an engine. I once had a guy tell me that the 360 LA engine he was selling was a "full roller" engine. I asked if we could pop a valve cover real quick to check. Guess what we found? Not even roller rockers. It was a crate engine with the "capability" of running a roller cam. He knocked $200 off the price and I bought it.