I bought this set from Amazon.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
This should to the trick, but I gave it all I got but I could not remove the freaking nut!. It must be more than 250lbf-ft tight.
If I have the car lifted high, I probably could get better leverage. The leak is not too bad, I'll do this another day when I do the suspension refresh and take the entire diff off the frame.