For anyone considering a PV36 there are a couple of engine related issues to look for.
First off the water pumps tend to start weeping at around 100,000kms, not really a new thing as most of the VQ series engines suffer, but with the VQ35HR engine the front timing cover has to be removed for replacement.
Second issue is there are two oil gallery gaskets that fail, they feed the intake valve timing, symptoms are surging/stumble.From a cold start you wont get these symptoms but after the engine cools for a few hours and driven they show up.An oil pressure test will also show low oil pressure.The gaskets can be replaced when the water pump is being changed, the new gaskets have been updated by Nissan with metal reinforcement.
As most imports have around 100,000 on the clock, there are going to be a lot of people complaining that these cars drive like crap, when in fact once the issues have been fixed, this is one of the nicest motors Nissan uses.