Hey, I am trying to do some research for locker diff needs, for my 84 k10 4x4 truck. Which I have 4 speed and big tires (39.5) and lifted not sure what size. But need have good lockers and 4.11 gears for rear and front. I know rear is 12 bolts and front is 10 bolts. Is anybody know how find me link for locker diff. I just want find a cheap not to expensive for no reason. Pls let me know. Many thanks.