Givi/Kappa adapter plate
Nope!!
You should get with the plate 2 Allen bolts which replace those holding the grab rail. They are shorter than the originals. Replace them one at a time, cos if you don't, the rear "mudguard" will fall down onto the wheel.
The plate is fixed by 4 smaller Allen bolts with nyloc nuts. 2 at the rear thru the slots in the top rear of the original rack, 2 with nylocs and plates at the front. The plates bridge the gap between the grids on the original rack. Before you tighten them down, clip the box on and make adjustment so that the box is as far forward as possible, making allowance for seat removal.
Should take about half hour in all. The new rack is finished off by covering with a clip on plate which covers the 4 bolts.
HTH
Ron