Someone started a similar thread on CT today as well, here was my response there:
You are referring to Bushwacker "Pocket Style" flares. Unfortunately, Bushwacker doesn't see the demand for this item among Titan owners, therefore they don't make them, nor does anyone else. If they did, I'd have had a set long ago!
They will be available very shortly. I'll have a thread up soon with pictures of them color-matched and installed on my truck (yes, the pocket style riveted flares). Also, I'll have an article in the Spring 2008 issue of Nissan Sport highlighting them. More info to come soon. But the prototype is finished, and they should be going into production soon.