Here is the NAPA replacement axle.
This is the part that is "identical" from left to right:
http://ppl.ug/qR4uY0Yc2kQ/

These are the green cups that the bare CV portion of the above axles go into:
http://ppl.ug/TrAWAsX9mVc/
http://ppl.ug/kIf9EE7UgFE/

The green cups have, on one side, a long shaft (the part that is hard to find/buy) attached to it. On the other side, is a green cup that has the short shaft attached to it (available at stores).
Both of these shafts are located inside the differential.

Hope this helps...
---JIM---