I've been wondering if there is different length A Arms or spindles between Chev and GMC trucks. I have an '87 chev shorty (R10) and replaced many parts with an '87 Gmc 1/2 ton 8' box parts truck. (I think) I used the spindles and lower control arms from the Gmc, with the chev upper A arms. The GMC had beefier rotors so I kept them. Upon reassembly using the original shims, there is a noticeable slant of the tires at the top as if the top A -Arms were too short. All parts looked identical, but can they be different sizes? (I ditched the rotten parts already.) I also forgot to re-install the bump stops on the upper arms, but I cant see that having such a large effect. Somebody help! Any advice is appreciated.
Thanks.