its a second hand sports car which has been driven like a sports car in japan and in australia.
If you expecting the same reliability as a family toyota corolla then you might be surprised.
Regardless if it is a skyline, any second hand sports car will require maintenance. What you should be looking into is the costs when things break, because thing will break.
Luckily for skylines there are plenty being destroyed by kids and there are plenty of spare parts and aftermarket parts floating around.
So once something goes pop it is quite easy and cheap to find a replacement part from Nissan Australia, skylinesaustralia or an import wrecker.
Plenty of r32 parts can be interchanged with r33's (starter motor, alternator, clutch) and GTR's (coilpacks, injectors *with some rewiring) etc