You can also go by the engine serial number , as long as the engine wasn't changed ..
Here is where the engine serial number is ..When the picture opens click it again for full size..

The codes go like this:
1995 model -- TE20E-80xxxxx
1996 model -- TE20E-81xxxxx
1997 model -- TE20E-82xxxxx
1998 model -- TE20E-83xxxxx
I think you can follow the way this works.. Post back when you find your number .. Altho these numbers are CDN & US they are probably the same for NZ ..
Here is where the engine serial number is ..When the picture opens click it again for full size..

The codes go like this:
1995 model -- TE20E-80xxxxx
1996 model -- TE20E-81xxxxx
1997 model -- TE20E-82xxxxx
1998 model -- TE20E-83xxxxx
I think you can follow the way this works.. Post back when you find your number .. Altho these numbers are CDN & US they are probably the same for NZ ..