I don't have the AGX's yet but will soon. The part #'s are 741029 front and 741021 rear. I have heard only good things about these shocks from the people who have tried them.
As for the STB well you can get one for the rear from stillen but they had some fitment problems for the front bar on the 2k+ models and I don't know if they have got that taken care of yet.
