If you are replacing just the windows, you will need to look for 97-02 because
the zipper on your
drivers side rear window panel changed.
97-02 Zipper head stays attached to window panel when removed.
03-06 Zipper head stays attached to the softtop.
There are also some slight material pattern/color differences.
Having said that, I have mix and matched rear windows.
This is where it gets confusing
I have a 97 with a 03-06 softtop and 97-02 windows.
An upholstery shop was able to swap the zipper on your drivers side rear window panel very cheaply (so I assume easily) and I don't even notice the difference with the material/color.
However it would be far more difficult (expensive) swapping zippers to make a 03-06 rear window panel fit a 97-02 softtop because the zipper that needs changing is attached to the softtop.