fender gap, need advice

I just went through this after accident repair on the front of a Dart. The top door hinge doesn't adjust, the bottom one does so start with the top of the door as a fixed point and adjust everything to it. So probably in your case adjust the bottom of the door (bolts under kick panel) so that the back of the door is even along the rear quarter and then loosen up the whole fender including things like the struts from fender corner to bumper braces, tabs on grille (they will snap), etc. and then adjust the fender to work with the door and the hood. Good luck, this is really tedious...