[Overdrive]

I believe you're truly talking replacing most of, if not the entire, dashboard assembly with one from a younger 986 that had a glovebox.

Doesn't your paperwork fit in the (literal) glove box that sits right next to you in the center console between the seats?

The only reason I don't put my stuff in there is the previous owner broke the hinge so it isn't really secure anymore.

I'm sure people have done what you're thinking of, though I don't know that it's documented anywhere on here. As I said, though, the dash area is essentially one good size piece plus the small hood over the gauges, so you'd have to replace that entire section of the car with one that has the golvebox.