Dart sport dart swinger quarters

The dart sports like mine are basically just a duster with a dart front clip. Because of that the front wheel wells are shaped differently than the rear wheel wells. Has anyone welded the lower half of a 2 door dart quarter panel into a sport? Pretty much whole quarter below the center body line. That would also change the lower body line to be straight like a dart. My 76 needs lower quarters replaced and I am considering doing that. Couple questions.
Has it been done?
Would the internal stuff like wheel wells, inner rockers, trunk sides match up or would those have to be changed to dart also?
Darts have a 111 inch wheelbase sports, dusters, demons have a 108 inch wheelbase how would that affect doing this? Just shorten the front edge 3 inches?
How much would this affect the cost of replacing the lower quarter panels?

these 2 pictures are old ones of my dart. FB_IMG_1570141955345.jpg spirit-of-76-dodge-dart-lite-2.jpg this last pic is a rough photoshop of what I want to do.
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