A Case Of Junkyard OCD?

While I can't claim to be a junkyard photographer of Lost America's caliber, I do my best to capture junkyard images that tell a story. The other day, I went to the local yard...

with a member of Belvedere Adrian's LeMons team, to help them pull some B-body suspension parts for their bent Belvedere race car (yes, I'm helping a competing Thunderhill team... or- heh, heh- so they believe), and spotted this engine block sitting on the ground with the pistons stuck upside-down into the cylinders. The question is: why? It looks like the person who pulled the engine just wanted the crank and head, so why take such care to keep the pistons all together if you're not going to buy them? Bonus points to anyone who can identify the engine; it came from the car next to it. Hint: American car.