I rebuilt the doors on my '83 110. They are the rare-ish split top doors. The frame channels are the same as series trucks, rather than the later defender profile. After the welding work, I had them hot dipped, then I reskinned them with new skins. At the time it was the only option other than new (2010ish doors) or series doors. Zero corrosion in the last decade or so. IMO, it all depends upon your budget. Whatever you do, I suggest that you make your choice such that you end up with doors that won't corrode like the original stuff. While I have never dealt with them, the sp-4x4 galvanized stuff looks appealing.