Doc's 76 Four Door Valiant
Went to Auto Zone for a serpentine belt to fit a 2012 Charger RT 5.7, it was too short and didn't fit. Ended up wrapping a piece of string around all the pulleys the same way the belt would go and then measured that string, which came out to 84". I took off 1/2" for the tensioner and looked up 83.5" belts on the Internet and found a Dayco #5060835. Returned the short belt to Auto Zone and exchanged it for the Dayco 83.5 belt which was still a tight fit but it worked.