Actually scratch that. (By the way, thanks a lot for all the help. I used to frequent a lot in this section 2 years ago, you're the guy with the fast Z31 TT right, and used to race it in South Florida?? hehe).
Here's the updated info I just received from my Dad:
The car was actually purchased with 115k mileage, and soon after the timing belt was changed. He can't remember changing the water pump then, so I guess that could be one of the possibility. I couldn't tell if it smelled like maple syrup, lol, but it was definitley steaming like water. I'll do just what you said, wipe out all the moisture from the under belly, go for a short drive, and see what comes from there.
Oh yeah, I meant any online source for pictorial info w/o having to purchase the manual.