There are some companys that make after market center pieces. I'll see what I can find. One that I saw had the 1997 head lights(with built in fog lights) and the 1999 center(with fog lamps). That looked good. But I think the guy had to cut some out of the center to make it fit. I think I saw one that looked like the R33 GT-R center. There is an eye brow kit that goes over the top of the head lights(strickly appearance) and makes it look sleeker.
Later Dudes.
