Just by looking at it, I'd say it was part of the dash assembly and not a removable panel. The dash shouldn't be that hard to remove, probably a couple of hours but it will most likely be expensive to replace.
But he already has a tachometer, 2 tachs would be a bit overkill. I would definately explore on ideas for something to do there... if infact you want to just sweep the dirt under the rug "so to speak".
ya i wish the area was more in the centre so i could put a sticker or something nice in front of it but its in such a strange spot that anything i could think of would be off balance...
I was looking for the Korean factory address so i could mail these guys to see if they had any extra paint or something but i could not find anything. They probally would not understand what I would be asking for anyways