1972 demon barn find

That's a casting number. The vin is usually on a small pad on pass side of block just above theh pan rail and below the drain plug.

I think the number on my 69 340 is on the driver side of the block in front just under the head gasket. I will have to post up the number.

And welcome to the wonderful world of Mopars and FABO. 4 sp 340 Demon should be a fun car with the right gear.