360 HP Confusion. History of this motor?

No help, but reminds me of "way back when" when I was visiting a buddy and I noticed an old tradesman sitting next to his shop. When I asked him about it, he said "Yup, it's got a 360 in it". I said "Show me", and hopped into the front, thinking we'd pull off the doghouse and have a looksee; but he walks around the back and opens the doors and says "It's back here". It was a slant 6 van that he just hauled a 360 home from the boneyard in...