Its an import, its going to last. That years engine, sohc, is reliable farther than you can ....throw it? But if you want to make it last, they pratically give away dohc swaps all over. you can probably get one for 300 w/tranny and all stuff needed. So if you do that, somewhere in the Nissan forum, would probably be more than likely to go help you install it

that is if they are available and such.