Hey, got a 1988 GMC K2500 with 14 bolt rears. its a light duty 3/4 ton so its only 6 lug. want to upgrade to 3.73:1 ratio front and rear. wondering if both gearsets are the same. i did a locker in the rear but the most i've done to the front is change the fluid.

PS. 9.5" ring gear in the rear