You are going to be looking at roughly 2000$ for gears front and rear.
Give or take depending on what kind of deal you can get.
Talk to National, Modern,Folk automotive, or Spot here on the boards if he is interested. I do not have time for a gear job, or else I would volunteer for the work.
p.s. I recommend 4.88's regardless of what motor you run so long as you have an overdrive transmission.
Good luck