Axle upgrade

I jusdt got my jeep lifted the other day and when i went to pic it up i found out the spider gears are pitted in the rear end they told me i really need to get it fixed because its going to break at some point so im trying to find the best option to replace them im thinking i should get a super dana 35 rear axle kit with locker since i want to get a locker anyway. i was also thinking i could find someone with an axle thats a built up d35 but doesnt want a whole lot for it. Any help would be appreciated.

this is a great deal!

http://cgi.ebay.com/ebaymotors/YUKON-SUPER-35-KIT-FOR-1987-2004-JEEP-WRANGLER-CHEROKEE_W0QQcmdZViewItemQQcategoryZ33731QQitemZ80 04655225QQrdZ1

Locker and 30-spline axle