Where did they come up with the part number? It will fit the 273,318,340,or 360 engines. It will work in a Challenger, Cuda, Road Runner, Charger, van, truck, etc. The case lets us know it came from a van. It originally had a plug that went in the timming hole. Label it however you want or just leave it alone. What I am seeing here is that they are not giving you the right information to post. I can see it is not your fault.