WONDERING IF ANY ONE HAS DONE GEAR CHANGE IN FRONT DIFF? OF 79BRONCO WITH DANA44 WENT FROM 3.55 TO 4.56, I HAVE THE GEARS AND AM JUST UNSURE OF THE "SETUP" AREA'S IE. BACKLASH PINION DEPTH BLABLABLA ALSO HAVE ANY OF YOU READ OR PURCHASED RANDY'S RING AND PINION DIFFERENTIAL BOOK??? ANY INPUT GREATLY APPRECIATED.