What tires are you running on an 8-8.5" rim on a Duster or Demon? 3.5" bs.

15x8 with a 3.5” backspace?

Still small bolt pattern? Springs in the stock location? Which axle are you running and is it the factory width?

With that amount of backspace and wanting to run wide tires like that you’ll probably need to keep the ride height pretty high in the back