Anybody running 17" Cobra Bullit rims on a Duster

that's outstanding zhandful really inspirational for us trying to get the right wheels.
do you have any mods to the rear like mini tub / relocated springs?

Yes the Dart has both mini tub and springs relocated under frame, but only because the work was started by prior owner.

Regarding the +24 on the 18X9 in the ads your seeing, that's not a typo. I had those at first them swapped them for the +34 as I wanted as much backspacing as possible. For the Mustang guys depending on the model year they use either the +24 or +34 for us Mopar guys I would recommend the +34 to keep the tires off the fender lip on the 18X9 front wheels.