I had one of these on Betts. This time around I got a pack-rack (and not the sport-rack) as I saw it working very well with a milk crate on a Vespa. I ordered it last Friday, and picked it up from Close Motorcycles in Redfern yesterday. Installation was easy (it essentially replaces the grab bar) once one has the requisite Allen/hex keys, which I procured from Bunnings this morning. For reasons unknown the Kiwis decided to supply four bolts, two of size 6 and the other pair size 8, all for the uniform purpose of attaching the lugs to the bike.
You don't get a lot for your $350; the fittings for this CB400 are dinky. I think I would have preferred the rack to go straight up from the mount points, and may yet spin it around to face forward. As it stands a bag attached to the frame ends up sitting on the plastic beyond the pillion seat.
Next up, I need to fit the milk crate and see if I can wire up a USB outlet. The challenge is figuring out which circuit to use.