odds are the CV joints are bad, due to the torn boots letting water and crap in/
you can replace JUST the CV joints or buy whole new axles.
lots of deals on the plain jane OEM like one's on places like Ebay and Amazon
if your not going to run BIG tires, stock like axles are all you will need 99% of the time!
STI axles come to mind as normally decent prices and quality replacement axles, but these days there are TONS of them making them!