nathan is spot on there, had the 100,000 done on my 33, cost just over a grand. water pump replacement is optional fyi, i opted to get it done thoe as they tend to show their age as they approach the 100,000 mark. well worth it.
get nissan to put their full synthetic oil in it too, unless you wanna use your own. apparently its good, costs $40 for 5L (got a quote today)