Calvert rear suspension help required

[toyotaxr8]

The car is a zc fairlane, and i am running caltracs. This is the set up supplied by the Australian distributor for calvert. They have been helpful, and they say that is the set up the sell to everybody for xw xy zc zd falcons and fairlanes. I have found a set of QA1 shocks that are the right lengths to suit. I just don't get how other people could be running this set up without damaging the shocks/shock mounts