Nor quite. the axle tube is a different diameter, the bearings and seals are different, the axles are larger, the carrier is different. Basically, the only parts that interchange are the ring and pinion

 

Thanks for everyone’s help I'm going to try a few companies on the full floater if that doesn’t work out I’m going to keep the C-Clips for now. I can safely run them until something better comes up or time permits custom modification. At least this doesn’t keep me from fixing the truck this weekend. The real problem is a pinion shaft bearing and I have those and a new 3.73. I just wanted to put in a 3.73 and the eliminators while I had it apart. But don’t let me stop the thread I’ll be more than happy to keep talking rear ends.

 

How are the bearings different if I just ordered an install kit for an 8.8.....didn't matter which 8.8 I had.

 

The outboard bearings and seals are larger to fit over the larger diameter 31 spline axles and fit in the larger axle tubes. I don't remember if the inboard bearings are the same or not. The carrier is different, as are the side and spider gears and the cross-pin. The C-clips would have to match the groove which is approximately the same as the minor diameter of the splines. On a 31 spline it would necessarily be a bit larger than on a 28.

 

I see.

 

I can't find the full floater kit for the 8.8" axle. I searched Warn's website, and found one for the 9", but nothing for the 8.8". I didn't find anything on 4wheelparts.com either. Any other places to look?

 

4wheel doesn't put everything they have on their website, call them with the part # I gave you, it was in the catalog I got for summer of 2003, it's gotta be there somewhere.