Looking for my cars original 340

I know this is a long shot, but I am looking for the original 340 from my car.

V.I.N.# LM23P9B331109

If anyone has it in their parts hoard, and is willing to part with it, please contact me. Even if it's in your car, I'm willing to trade for a replacement of equal or greater value.

I'm always checking every 340 I come across for my original.
If I happen to come across yours I will let you know.

If you find a 1970 340, BS27H0B184371 let me know ;-) it would be a late 69 casting...
I have a block dated 7-9-69. I was told it was from a Barracuda/Cuda but I don't recall the reading on the stamping. It is .030 over and ready to reassemble, the crank is ready, etc.
I know it is a long shot but what is something like this worth in realistic, fair money to both sides? I'm not one to squeeze every last dollar from anything.