275/60 with stock wheel wells?

Now that is what i want to hear! haha. Rear wheel well should be about the same on dart and Valiant. Im pretty sure front fender opening is lower on a valiant though. (but that doesn't matter for my question).

Do you know what the backspace is on those wheels??

The front fender opening is different, but it doesn't change the clearance much. I had to do pretty much all of the same things to my Dart fenders to clear my front tires as I did to the original Duster fenders (I turned my duster into a demon tribute car). Just FYI, I know it doesn't relate to the rear tires at all. ;)