I need to regear and add a detroit in the rear. A local reputable shop quoted me about $2400 for labor and materials. This is for yukon gears in the rear, dana set in the front and a detroit. This is of course provided everything else looks ok. I know the axles are in good shape and the gears in it are fine. Currently they are 4.10's with open carriers. I know I am past the carrier change for the front. I am leaning towards 4.88's or possibly 5.13's. These are 1-tons running 39.5 tsl. Does this seem outrageous for the work required for this change?