will these rims fit my 69 dart custom

Take into consideration the backspacing on the late model wheels vs what you need to work with on the '69. Also take into consideration the thickness of the adaptors (which I have never been a big fan of). I am thinking that they may be able to get something to work in the rears but foresee fitment issues up front (especially with the use of an adaptor). Also, think about what tires sizes might work and their availability. Good luck.