Help on Chevrolet front stamp pad #s???

[Kat]

My parents "other child" and his wife,have 1962 Bel Air 4door sedan,that is for sale. V-8,powerglide,71,382 miles,ran and drove good,when parked last year(they had a baby...).$2700.They got it from original owners son inlaw.It was suppose to be a 327.The # is F0730D.I checked various websites and as close as I could come,was a 283/powerglide,but a 1960 model.I could believe the 283 part, doubt the 1960 part.The listings seemed incomplete in this number range.Thanks Kirk