Thanks I was pretty sure it wasn't The original motor. By partial vin are you referring to the numbers casted on the other side of the block? Also since it is a post 65' block any transmission after 65' should bolt right up then correct?
I've searched high, low, and everywhere in between but I still haven't gotten a conclusive answer. I'm wondering what year my 225 /6 is. The number on the block just below the head is
H225T 1 88