BTT.....looking for help!

Edit...I have a late Feb. SPD (2/27/70) St. Louis built B body. Can anyone with a similar build date confirm heater box part number?

Last edited by 70gtx440dana; 09/25/19 11:38 PM.

70 Road Runner 383-4 4 speed FJ5 & black guts
70 Charger R/T 440-4 4 speed FJ5 & white guts