Turns out it is a Nishiki International, in the brown tubing and creme lugs. As I mentioned, it has suntour cyclone components, and is a rather large frame. The guy who brought it in was probably 6'1" or so.

I'll measure the seat tube tomorrow, to get an exact size. If anyone is seriously interested, and local, let me know. I talked to my boss, and he said he didn't want it, so I could take it and sell it if I wanted.

-Steve