Production numbers

A 360 Duster said

Ok, fair enough, I guess it still depends on who you ask, my info about the piston change for the 72 model year came from Valiant .org. thanks for your input, I guess all Mopar guys like to think their car is special

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I think that's just car guys in general lol. That said, I tend to lead more credence to a published book thats been vetted for decades than what some guy(s) on a forum say. Only way to know for sure is to pull the heads and take some measurements and do some math