You will probably want to wait to get your rack until you get your trike. Most of the kits have some variation in the top of the body. My Champion kit on my Fat Boy drops slightly in the center, with a distinct curve at that level change. I had to find the rack that would fit either in the narrow center where it is flat, or a much larger rack that would span across the drop and mount on the raised flat area. I opted for the smaller rack and used rubber spacers to level it as needed. Click above to see pictures that will clarify what I mean. Fortunately Harley has a good variety of tour pack luggage racks to choose from. You should be able select one that will fit your kit and meet your needs.