Over at XDA there's a thread about this and possibly an easy visual way to confirm which screen you may have is by looking at a the picture I attached:
Basically it states that the 002 Navatec screen has a purple hue to it compared to the 003 Epson screen that shows a more true black color.
Hopefully someone here who has both devices can verify that the difference is that outstanding...
Here is the original post on that thread if interested...
http://forum.xda-developers.com/show...704889&page=41
***The credit for this post goes to Blu3g***