I'm looking to get a better more supportive backrest for the passenger seat of my 2005 FJR. I currently have a Givi V46 trunk. The backrest that came from Givi isn't comfortable, and is also too thick making it a bit too cramped for the rear passenger. So I am looking for something that provides lateral support, while not overly thick. I also don't want it to prevent the top from opening, so I am guessing it will need to be made in two pieces. Top part on the lid, and the lower part on the base of the trunk. I have done as much looking as I could, but am not able to find anything that suits my needs. I would really appreciate some guidance if any of you have any suggestions.