1972 340 motor

I have a mostly complete 72 340 that I got with a 69 Swinger 340. Before I get ready to sell, I thought I might check to make sure the original car is not out there looking for its heart-
on side of motor- 276083(might be a 2)0 340-7 4

Where is the VIN # on the block? It will take moving a lot of stuff to get to it.
Thanks in advance

maybe I misread the number- kinda hard to see - the only # I hav efound is 2780930 for 68-73 340??

I just got the motor where I could read additional #s
VIN is 33236547 as near as I can tell-
date is 9/27/72
I think the guys told me it was from a Charger.....