The panels are different. Other than the obvious visual differences, the Cuda inner door handle is in a lower spot then a Challenger.
Why do you want to put Cuda panels on a Challenger...just for looks or are you having a hard time finding a set in the color you need? Brand new injection molded Challenger panels are supposed to be available in a month or two. Don't waist your money on the newer Palco ones. Thery're junk.