I did a search, but didn't find anything.

Anybody out there put 3rd gen seats into a 2nd gen ram - extra cab?

 

I've never seen it done. However, I've seen 2nd gens in a 1st gen cummins.

 

Did some searching,why you would want to switch to those hard 3rd gen seating is beyond me. But in that case here is a few websites which will offer you a few ideas and what not:

https://dodgeforum.com/forum/2nd-gen...eats-pics.html

http://www.cumminsforum.com/forum/98...y-2nd-gen.html

https://dodgeforum.com/forum/2nd-gen...a-2nd-gen.html

https://dodgeforum.com/forum/2nd-gen...seat-swap.html

You will need to make custom brackets and fix the seat belts. Hope this helps somewhat...