Trying to figure out the disc brakes for my 64 . think I have it but not sure . Is their anyone out there that has a 77 elcamino or chevelle or proberly several other comparable models that you might be able to measure the distance on the spindle between the upper & lower ball joint.Also measure where the spindle is in relation to the lower ball joint.I went to two different wrecking yards .and walked through every G M model but they had crushed all the old stuff. If anyone has any knowledge on this I would appreciate you help. Thanks.P. S. It has to have the big rotors and calipers. I have new wildwood calipers to use.