Freightliner M2 Cab swap HELP!!!

Hey guys, I am looking for some knowledge out there from someone who is familiar with these cabs as far as the shell, I have a 2019 m2 cummins, juice brakes, that was involved in rollover accident, all the stuff inside the cab is OK, wire harness etc, per my research it says m2 trucks are produced from 2002 to present, so with that being said, I found a cab off of a 2004 that's very reasonably priced, but want to know if I strip it completely down to shell, could I swap all my stuff into it, I have contacted freightliner parts and body shop, along with other truck centers and no one can tell me, from my first impression looking, they appear to be same shell