I welded mine like this, Works Great!
Welded Dif, What the hell!!! - Pirate4x4.Com Bulletin Board
The above is a JOKE, Weld the Spider Gears, not the Ring Gear.. I had my Spiders welded in my cruiser for a few years, Worked fine, Burnt alot of Pricey Rubber off my Tires, but Now The Aussie is working great!