You can go to the GM Heritage site and find the dimensions for the original build, pin and bushing dimensions are given. Then measure what you have and make a decision on your next move. I was lucky enough to find a set of NOS MOOG pins and bushings, my axle and knuckles were not worn in the bores, the kit brought it all back to zero perceptible slop, along with new tie rod ends, drag link, and adjusting the steering gear, all is well.
