70 340 Duster Instrument Cluster

Assuming your 340 Duster has the rally dash...
Typical glove box trim for Barracuda has the Barracuda script attached though 5 small holes and a raised fish molded in. Duster and Demon were bare.
The Barracuda piece could work though. Remove the script, sand away the fish to flat, cover it all with a applique kit from DTM.