SteveL
Huge chevy guy
By the time you pay parts and labor, you could pay for most of a floater kit.
Brand new housing any width you want, hubs, bearings, seals, drive plates, axles and brake rotors for 850.
Use your 3rd member and buy a set of common oem calipers. Sell your old parts and you will be all new for 700ish.
http://9inchfloater.com/CompleteRrEnd/CmplteRrEnd_28_31.htm
When I was looking at putting a rear end together this was the way to get a better rear end with new parts. When I called about it they recommend a going with a beefier housing if youre running bigger tires and or lockers. It adds a couple hundred bucks to the Internet price but still a good deal compared to other options.