DUSTER/BORICUA!

So I know this is a long shot, but I am looking for a specific 1973 Plymouth Duster that my fiancee's Grandfather owned before he died. You live in Cabo Rojo where his grandfather lived. The Duster was green and was given away by his grandmother about 3 years ago. Do you have any knowledge of this car, it would be the perfect wedding gift. Please let me know if you have any info I greatly appreciate it!