It appears that really the only difference between 72/down and 73/up are the ball joints. According to Rockauto, and the Moog Parts on there, the control arm bushings, tie rods ends and the adjusting sleeve are the same for either years. At least I assumed correctly that I had 73 up discs on this car. This adds one more questions then..
As for the UCA's Im assuming that those have to be the large ball joints, since I have the LBP?!?