73+ passenger upper control arm

Help, chasing a suspension problem, need to rent , borrow, steal, or buy one arm. If i can borrow it, it will be a two week turnaround. If I have to buy it, i'd like to keep the price down, because after the diagnosis, it will be scrap iron to me. Leave the bushings and balljoint in it, even if they arent great. Trying to locate the source of my binding. Thanks