From memory when I did my gtr conversion, spacer/bracket things had to be made up to fit the front guards. This was a few years ago though so can't fully remember. I think something to do with the way the guards bolted on around the strut tower area. Still used the GT headlights and they fit although it did look like there might be an ever so slight difference between GTR and GT headlights, nothing at all major though and wont stop things lining up.