they haven't made closed knuckle dana 60s since I believe the early 70s.
95 cummins would have a coil sprung(first issue), balljoint(ick), central axle disconnect(triple ick), and hubless(EWW) axle. All around they are junk IMO. My buddy has a 98 that he is planning to build a custom kingpin Dana 60 to replace the stock axle.\
Rear could be a Dana 80 if its the heavy duty setup.