1974 Roadrunner or Satellite??
The "M" in the VIN is the giveaway here! Each model car has a certain trim level as stated in the 2nd character of the VIN! Satellite and Roadrunner have a different trim class, and always have! Same for Belvedere and Fury, there's how many different trim levels of those names?? Roadrunner was based on a no frills platform and will not have the same trim items on it as a Satellite, hence the "M" for medium trim level! Geof