OK, I did more searching and found a source for both the GKN and Lobro CV products. Both appear to only be available as complete units with shafts, joints, boots, etc. I would prefer to just replace the joints and boots.
GKN pieces were priced at $277.24 each and the Lobor pieces were prices at $476.50 each.

I'd appreciate it if any of you would share your experiences with these two products or cv replacement in general. Anything I should pay particular attention to when putting things back together?

Thank you.