What exactly do you want to rebuild? The differential or the tie rods/ball joints? A couple of months ago, I bought new Spicer tie rods and drag link, along with all 4 Moog ball joints. I'm into parts for $250 as of now. I still need to pick up the axle U-joints (about $30) and the two seals for the backside of the hub (about $10). You figure about $45 for an alignment, and your at about $350 to do it all--assuming your bearings and hubs are ok. I've done this job twice before and it takes a long day to do it--it'll go a bit faster if you have air tools though.