I needed the the cross bar parts (#1, #6, #7) and ended up getting them off a truck at the pick and pull near San Antonio.
I also recently purchased new parts #4 and #5 from LMC, and found that the new #5 was poorly made/unusable.
#5 has a threaded insert inside that is made of plastic, and the outer metal shell (with a hole in it for your lug wrench handle) is molded around it. However, the plastic and metal were not attached properly, and as soon I tried to thread it on the brand new #4, the metal shell started slipping around the insert and it could not be tightened. I had to go back to using a couple large washers and a regular nut.
Bruce