I would just replace the outer CV joints with new joints and boots instead of putting on cheap made in China axles.
Most people don't do this because it is a lot cheaper to buy an aftermarket replacement axle from Pep Girl, The Manualzone or O'Malley.
There's a special tool that will pop off the cv joint and it's under 50 bucks. Or you can try beating it off with a punch and hammer.
Here's a link to a video for removing the cv joint with the special tool.
https://www.youtube.com/watch?v=vOh43Wkmqnc
Special tool can be purchased on eBay.
http://www.ebay.com/itm/271887159717...%3AMEBIDX%3AIT
If you do replace the entire axle don't forget to do the differential seals. Seals sometime get damaged during the axle replacement and will leak differential oil after the new axles are installed.