Last 1972 dodge demon built?

Was wondering if there is a way to know what was the last dodge demon built in 1972 or in general since 1972 was the last year. I have a demon 340 built on July 28 1972 and wanted to know if it was the last demon or at least the last 340 demon built. Or if it was built on the last production date if anyone knows what day that was? Thanks let me know!