Reshape the hump in the back doors for a smoother transition then reshape and extend the nose to more closely resemble the '66-'70 Chargers, and while they're at it make a set of IS300 style taillights that strongly resemble the '68 model's (IE two round red lenses, with little chrome rings around them and make the background black behind clear covers) then it'll be a Charger, I really don't mind the whole 4 door part of though, aslong as it isn't as ugly as the mid-late 70's boxy B-Body Charger (now THAT wasn't a Charger!)