Ya I'm not sure about dealer bolts at this point. I doubt my local dealer would even have the parts available, they never seem to. Thanks for the torque specs, I was curious about both actually haha!
I had a 21mm on the upper bolt of the rear shackle (the one with the steel sleeve). It seemed like a 20mm socket would have worked perfect though. I intend on re-using that stopper nut so I can take that with me, shouldn't be hard to guess the length.