Dana 25 question Bendix to u-joint...

You need to put the complete Axle shaft (just the insides axle shafts) from 27's in both sides. You shouldn't try to convert the Bendix or Repelza shafts.

 

There's a bushing issue I believe with the older axles like on the 2A. I think it just needs to be removed from the end of the housing on both sides. Warloch probably knows what to do.

 

There are a couple little issues with the swap. It's been a few years since I did it, but remember changing seals and bearings - getting to esentually a bare tube. I think the bushing Glenn mentioned was a part of the outer axle seal I changed out. I would think someone else here has done one more recent, but will look to see if I can find my notes and get you specifics.

Overall, I don’t remember it being a huge deal, but then I was swapping R&P and everything at the time.

 

Service manuals sure come in handy. The bushing I mentioned is also a thrust washer and used to control axle float with Bendix joint axle shafts. The spicer shafts are held with a snap ring on the end, so the bushings shouldn't be an issue. According to the manual all axles have them installed.