If you've never done this kind of project before, it's not one to do on jackstands in the driveway. You'll end up paying more on the long run because you'll end up taking it to a shop to fix things right.
Next, is it a B or D series?
Like Tracy said, most shops will charge around $6-700 labor. Sometimes it can done for a little less, but you have to figure in cost for parts. Shops can warranty any parts provided by the customer, so do you want to take that chance? And if you do take that chance, you still have to get quite a few parts.
You're realistically looking at a $1500-2000 project if you get a shop to do it when it's all said and done.