Take a look at the G-Bar by Chris Alston. I used it on my car, and while not on the road yet, the install was probably the most straight forward of any major upgrade I have done to date:
Got the entire setup, G-Bar + Moser 12 bolt G-Bar ready rear end, Mini-Tubs and Gas tank from Frank @ Prodigy. Great guy to deal with, he gives free tech support to forum members you might give him a call.