This one is a 69 coronet. Real Superbirds were built using 70 roadrunners with 70 coronet fenders and hood.
The back glass was the same on all 2 door b-bodies (except for chargers) from 68 to 70.
Daytonas were built using a 69 Charger R/T with 70 Charger type fenders and hoods. Actually, there were differences in the daytona hood and fenders, but basically the same sheet metal.