Lower control arm adjustment

Hey guys im a young gun doing a complete suspension swap with my old man Including swapping out th k frame and going from drum to disc. As were going to bolt on the spindles I can't seem to get the upper and lower control arms close enough to bring them together with the spindles. We tried jacking up the lcas bit it was lifting the whole car of the stands so we lowered it back down. Wouldn't be surprised of we screwed up when hooking up the lower control arms first time around but is there a way to adjust their height on the car or do we have to drop them an start over. If so does anyone know exactly how to do it? Any help would be greatly appreciated and I'm hoping this won't hold us up for too long