is it easy to do or I should have a mechanic do it? thank you

 

Not hard if you have the tools. You have to drain the tranny fluid and have a huge socket and 1" drive breaker bar to get the axle nut off. If you can do struts/springs, you can do this. If you cannot do a brake job, take it to a mechanic!

 

Well put

 

the axles are a real pain in the *** to get out.
Get like a rubber mallet and you'll probably wind up having to LIGHTLY tap on them to try to get the nut and pull them out.

real pain in the ***.
not extremely hard though.