It dosnt actualy fit onto the gtr bonnet but it fits onto the GTT front bar.
If you have the standard bonnet it will hit the lip.
The GTR and aftermarket bonnets have the hump and sit up higher at the front.
If you look at the pic above you can see the higher hump in the aftermarket bonnet that meats the lip.
So you could cut your bonnet so it didnt hit, but im not sure it will match up very nicely, it will likely be lower.