1971 383 HP

It shows G series on the pad, so 1971 model year.

Different fonts were used at times and as the roller dials wore, they can get cockeyed.

The first 1 is also the model year - 1971

St. Louis VINs never, ever reached into the 7xxxxxx range, so that is also a 1.

It is from a 1971 B-body.