be ready for a lot of problems...I know a lot of people on here who turboed their cars with more mileage than you, and lasted a long time...it depends on a lot of things. I'd say you be pretty much ok if everything checks out fine. BTW, we are talking about Honda, not Nissan. It sounds like it was a KA24. He should have put in an SR20, factory turbo engines rule.
-Andrew