I like those rims. I have weld Pro stars I'll be putting on my Pro Street Duster, they look the same as those. But you sure you want the same size tire all the way around with those rims?
Challengers can really hold alot of rear tire.
I tried some 235/60/15 on 15x7's all the way around with aftermarket rims on my 72 Challenger just to see what it looked like, and it looked ok, but the REAR tires kinda looked lost in all that fender depth.
I'd go with 15x7's in the front and 15x8's for the back myself, and then a little bigger back tire, maybe a 255, or 265?
I'm running 15x7's in the front with 225/60/15's and 15x8.5's in the back with 295/50/15's in the back.
I'll try to take some pics this weekend.
When comparing it to how it looked when I tried the 15x7's and 235/60/15's all the way around, it's like night and day, a totally different looking car.
I wish I had taked pics to compare. But all I have is it with 14" rims on it.
Don't get me wrong, Rallye wheels the same size all the way around look good, because it has that stock, restored look, but aftermarket wheels, I think look better when you add a little more meat to the back.
Good luck with whatever you choose, remember it's your car so choose what looks best for you, try looking at everyones wheel choices on here, to compare.