Looking do do a few upgrades on the wife's '93 3/4 ton Sub. What is the difference between the pre and post '95 A-arms out (a arms, knuckle, axle shaft, caliper)? I know Off Road Unlimited sells a kit to upgrade '95 and newer 3/4 ton Sub brakes, and other companies sell kits for '95 and newer as well. I'm not necessarily looking to by any of these kits, just wondering what the difference is. Will the newer A-arms, and or knuckles bolt on to my Sub?