will rear sway bar help stop side wall rubbing

im running a 8 3/4 Stockton wheels i think there 4" back spacing cant recall
running a 245 tire i trimmed the wheel lip some but still have a slight rub only on drivers side heres a pic of my clearance

i was thinking of buying a hellwig rear sway bar but not sure if it will even help guess i may have to go to smaller tires

the rear is the tightest spot probley 1/2 in the center of arch to tire