You said in your o.p. that you wondered if a 1969 front fender can be made to fit a 73 up dart.
I thought you were asking if you could change the whole front end to look like a '69, not just the bumper only.
If you did the bumper only, the car would look buck toothed in my opinion......:D
I think i gave you the proper advice from what you asked as incomplete as it was..........
Do what you want to do, it's your car. :thumblef: