I have something similar to Steve's front styling plate fitted to the rear of my car, these are prob standard but I'm not sure, it's black in colour, can you get them in Grey? It would look so much better!!!
Graham, I think what you are referring to is standard, I recall at the time I purchased my XT that there was a styling plate for the rear that was the same style / colour to that fitted to the front of mine, not sure how long Nissan would continue to sell these after the T30 model was replaced though.
Graham, hope you read this before tomorrow, the part in question is called a Surburban Rear Styling Plate, made of ABS plastic and its part number is KE540-EQ042, according to the genuine accessories brochure, oct 2003.