Help with Addco Sway Bar

the only differences between his pics and your pics... His mounting tab location is about 2 inches different from yours.
his end link sleeves are about 2 inches longer than yours ( that should scream "same plan" ).
and the most important difference. his late model calipers are at rear or 1 o'clock position.
I do understand your not wanting the switch the spindles left to right.