Anyone running 15x10 rears on their Duster/dart sport?

Awesome. So they may work after all. Thanks! Car looks good BTW

Maybe, it will depend entirely on what the backspacing is on the rims and what rear axle you're running. And of course the tires. 295 is as big as you're going to fit inside the stock wheel tubs even with a 1/2" offset and some trimming, unless you're going for that 70's SS springs with airshocks look.