got them home and removed a spring from the challenger and laid them out besides each other and..........
they are NOT the same.... triton spring on the top
take notice to the front of the spring

considering how much bow is in the challenger springs they sat almost flat while on the car
distance from wheel to guard with original springs (6")

"new" spring pack after i added a leaf from the triton pack and changed the overload springs over (the pack on the bottom)

and the new distance from wheel to guard with the "new" spring pack (after i went for a drive to settle them in)(8")

there is also another reason why the triton springs wont fit the challenger as the front spring pin is a different size, triton is 14mm challenger is 16mm