Differential drop kit questions

[mchnhd4]

Supreme suspensions dif drop kit is confusing. For the Z71 model they sent me 6 bolts; 4 about 3" and 2 about 4" or so with 2 lock nuts. After reading the reviews on amazon it seems they kept sending bolts that were too short. So I called supreme and he said use the longer bolts on the passenger side.  The 3" bolts and spacers fit where the dif bolts to the bracket. The passenger side is blocked by the electronic steering assist (i believe thats what it is). So your easier option is to put the spacers between the bracket and frame, not the dif and bracket like on the drivers side. Does this seem weird? So one side I put spacers between the dif and bracket and the other side between the bracket and frame?