from what I have heard, that sounds about right to me...

 

my buddy and i set up his rover with ARB air lockers which is a bit more complicated because of the plumbing but its still not that hard just a little tedious making sure you get correct back lash and everything meshes... if you have the desire to DIY id say go for it but expect to buy or rent a few specialty tools and get real dirty and frustrated ahaha if you want to shoot my a PM i can give you some more specific advice

plus it feels good to say youve done something as complex as rebuilding a third member