Front suspension interchanges

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?!?

Unless you have some aftermarket conversion to the lbp or have Doctor Diffs conversion sleeves. If you have a conversion then you will need the old brake drum lower ball joint.

I see people ordering parts that won't fit their car all the time so it will pay you to figure out what you have before you order parts. Posting some pictures might help to figure out what you actually have.