After 2 years of riding around on my stock 3:42's in my Jimmy I' going to get it set up for 4:10's. A few questions however...I don't do gears so that begs the question...How much would a total rebuild for front and rear cost me? I've got 2 places I would consider doing it. One says I buy the parts, the other (4 wheel shop) gets the parts and does it. If I supply the parts, what do I need to get other than the ring and pinion? Help!!!