So in the middle of a road trip my driver's side rear axle started making a clunking noise, and it turns out my boot was leaking grease and running dry. I topped it off and made it home, but I figure I'll go ahead and replace the whole axle. I found Cardone axles for $85 each with a lifetime warranty.

Is Cardone a reliable brand? For the price and with that warranty, I don't think I can go wrong, but just want opinions.

Should I go ahead and replace both rear axles? I haven't had any problems yet, but if the job is substantially easier to do both at once than separately then I'm okay with being proactive. If it's not, I'll save the time and money.

Are there any other parts I should order? New differential seals or anything like that that I may come across once I get started?

Thanks for all of your help.