Not everyone can afford $175plus for new on top of new parts to install or if he pays somebody to install them.Its $500-1000 to have a rear end set up. I bought a 89 Shortbed from a coworker and when he owned it the rear end went out. He paid $650 for a Used rear and to have it installed. I thought he was nuts because hes not dumb when it comes to wrenching Junkyard only charges$100-150 for a complete rear.
If you Have the funds available Id get new if not get what you can afford.