Spring offset and rim and tire size 68 Barracuda for thos who have done it

@AJ/FormS would be the guy to talk to

But Duster rear quarters and wheel houses are about the same for clearance. With an MP 3/4" offset (it's really more like a 1/2" because the front hanger can only be offset a 1/2" before it hits the frame rail) you should be able to fit 295's in there without much in the way of cutting or trimming. 15x10's would work for you. If you're SBP still, you'd probably want about a 5.5" backspace. If you're BBP you'd want a little more, 5.75" to 6". As always, you need to measure YOUR car to see if those measurements make sense, because the bodies on all of these cars can be off as much as a 1/4" compared to another.