You might be suprised what it will cost to put a dana in your car. If you have to buy a spool and gears and axles, and set-up cost. You are already well over a grand. Just sell your rear for a couple hundred bucks and then call dr diff or moser and ad 2 or 3 hundred and get a new one already set up and ready to go.
Or, for ex, I just picked up a 4.10 dana with a posi for 250 bucks, and go from there.
I can get them for that all day around here.