For those who aren't looking to move beyond a 27" long shock but are clocking up some KM and suffering driveshaft clicking noises, I found a repair kit.
http://jpfreek.com/2013/04/29/high-s...k-driveshafts/
Available on Quadratec too.
I haven't found anything about the front drive shaft uni joint though. Still working on that. It is crimped together and not supposed to be repairable.