Harley calls this the King Tourpack, part number: 79071-10BYM for the Black Denim
I got the detachable hardware, part number 53276-09A so that I can maintain the Street Glide look when I'm not using it.
This is what it looks like for the long range touring and two up comfort. Notice I have to remove the antennae - I bought the relocation kit part number 76561-09 but I just haven't installed it... I just love the original look and I really don't want to commit to moving it just for the tourpack, but maybe later.