Looking for a 1971 slant six 225

tom999w said

Looking for a complete 1971 slant 6 225. I've noticed that 1971 cars all were junked and no 1971 slant six engines exist anymore, but I'm shooting for the moon. Preferably the engine would be in the northeast U.S. so I could drive and pick it up.

Click to expand...

How do I tell for sure it's a 71? I never have figured out the stamped codes on the block ledge. I think I have one, but I don't want to part with it since it's a 225 and I don't have very may. I have a pile of 170s. Does it ALL have to be 71 or just the block?