Crate 225?

The Dodge dealership That I purchased my 70 Challenger, SL6 car from here in my SoCal town. Actually came up with a '77 engine to replace my high mileage engine in the late 90's. I asked for an engine that had never been put into service. 3 weeks later the parts dept. came up with an engine from a mid-west warehouse. This engine had set for a long while destined for a military vehicle but never used. They originally asked $1,100. For it, then changed their minds stating they do'nt get calls for them. So I paid $900. What do you guy's think? NOS, Crate??? I do'nt know. It now has 125K miles on it. Thanks, Al