Looking for a transfer case for a 89 Dakota. I think 88-92 are all the same.

 

Not exactly the same, but I guess you can say that in a way. They'll fit however.

 

So what is different between 88-92? When I check sites such as rockauto, they have 1 part no. shown for those years.
FWIW This is for a project I am building. My main concern is, that it will fit a nv3500 transmission, and have a mech. speedometer hook up.

 

still looking