Body Dipping

Hi all.....have any of you had your shell dipped? If so, what did you do about the area between the upper and lower windshield cowling? I have both of mine removed right now to replace sheet metal due to corrosion damage (65 dart), but am wondering should I leave my outer off until it gets dipped and then treat and paint that area before I put the outer back on? I seriously wonder how Graveyard Carz does it....they couldn't possibly leave that area bare raw metal do they? Anyway....just wondering how any of you have done it....Thanks in advance....