Posting this trying to get help for my dad hes got an 07 2500. What I'm looking for is, what year did they stop making the locking hubs on these trucks. this truck has american axle 9 1/4 5200lb front in it, did they make a version of this axle with locking hubs? I know there are conversion kits out there but thats not what im looking for. any help is much appreciated.

 

no locking hubs on dodges since 93....