dont know about darts , never owned one .
i rolled the lips on my 68 barracuda , offset spring hangars, stretched the front of the fender wells to the inner panel , and kept the exact fender contour , some hammering of the inner fender panels in the right places , (from previous drag racing experiances for big slicks) , and my 295 60 d15`s fit up in the fender wells ,and to some one that doesn`t know , it looks stock...
Have posted pics before of it/them before , but have to get on my p.c t post them ...