I just installed mine this afternoon using all Honda accessory parts. A few hints: they don't come with instructions. I was told that it did. I did a google search and it brought me here (shocker!) to the accessory luggage rack install instructions. I used those, but it didn't include the part for the backrest. I could do one in 30-45 minutes now that I nuked mine. Another hint, when installing the brackets that go under the seat, make sure to push them as far inboard as they will go, then tighten them down. That's the only way all the bolts will go into the backrest exterior mount......ask me how I know. I also saw where someone is making a taller seatback mounting plate to raise the height of the seatback for $50, should you think you didn't already spend enough for the seat.......