Vin/Fender Tag Help

I’m just trying to find more information about my car(‘66 Dart Wagon). I’ve looked at a few different sources for decoding both the VIN and the fender tag. Sometimes the info lines up with the know about the car and sometimes it doesn’t. For example, the manual form My Mopar says the fender tag indicates a 318 but the guy I bought the car from pulled the original 273 which it what other decoders tell me. I also might be reading it wrong but trying to find the production number for my car has been elusive to me so just looking for some help and extra eyes look at all the info to make sure I’m understanding it all as I am new to the Mopar family.
I appreciate all the help and info I’m sure I’ll get from y’all thank you.

VIN-LH45D65139060

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