The gear meshes are much stronger. It's not that hard to replace yourself, it just takes planning, patience and a lot of beer. The instructions that came with it were a blurry, dark, photocopied page, so do your own research first. Here's a readable copy: http://www.whiteline.com.au/docs/install_guides/Z5206A.pdf. The power hanger is appropriate because I believe you need to reuse the inner core of the diff bushing, which cannot be reused if you use a drill and hacksaw to remove it.