The bolts on the upper cross-shaft were tightened down while the upper and lower pivot bolts were left loose. You want to wait until the car is set on the ground before tightening these. If you tighten them now, with the suspension at full droop the car will definitely squeak. Since this car is missing the engine, these will stay loose until there is a motor under the hood. The ball joints, on the other hand, were tightened up once the spindle was in place. Also make sure to have the springs properly seated in the upper and lower pocket before attaching the spindle so the car will sit level.