Mate that's a huge call telling me I'm wrong when I've been driving the same car since 2000 I reckon I'd know it she was turbo or not.
Mine is a 2000 Nissan Navara DX, 2000 mode with the ZD30 engine.
The engine is the 3.0 litre petrol/injected.
Not diesel, not turbo.
I'm in Australia by the way.