It is very well possible that the upper corner clip of the C pillar panel came loose and fell down. It isn't difficult to look behind the panels too sort that out.
The difference between pre 98 and after 97 lights is the location of the high beam lights and fog lights. These two were switched with the model change.
I have tried to change to OEM MB Xenon lights, but figured it would be too expensive...
Can you send me a quality picture of your door panel/wood trim, so I can see what it is exactly what you need? I think/know that most of the parts are much cheaper here in the Netherlands, but I need to know exactly what you need.
with a minor 600+k