okay, adding my 2 cents in here, and thats about all it is worth. The Revell looks better that the resin, I know the front of the resin is too "clunky" looking also.
As for the Revell window openings, just removing the chrome at the top of the door and C pillar will help, and maybe a smidge more. Do not worry about the chrome anyways, it was optional for the Gran Torino package and not on the S&H cars (maybe on some ordered. but not the movie or series cars) That was on the Elite and Broughams tho The S&H cars had a thin stainless piece with the window whiskers
Another easy fix in the lower front fender. The Revell looks straight from the tire to the front bumper. It should slope up from tire to bumper. Little sanding, all is good.
Overall the shape is pretty good, and alot of lil kinks can be addressed with some sanding and reshaping.
Rockers, not sure, but I will try to address it once in hand.
Looking at the above pic I posted, if the rockers and rear quarter are corrected (rolled in) is the bumper out of whack then since it angles like the quarter?
Chuck?