You are also running a body lift, correct? Next move is to bring the center frame rails up to eliminate the body lift, eh?
Think with all that you are doing, you could cut, slice and splice a rear axle to act as a front one? Basically take a rear axle, cut the bearing cups off, trim down the axel tube, reweld the cups back on, get the shafts cut, resplined, and reflanged and voila, a do-it-yourself anvil....