The mounting of saddle bags is something I have tried to deal with to make the Burgman more "touring machine" in nature.
There are no commercially available mounts that I am aware of. Some forum members have found a private German forum user ( of another site ) that makes a mount available for the 650 that is reported to mount in existing holes ,off the original grab rails of the AN650.I have seen photos and it appears high quality.
However, attempts to acquire these have met with some problems as the gentleman reportedly wants and only accepts "direct wire" transfer of funds to his bank in Germany. But, their quality ,in stainless steel ,is reported to be excellent.
I believe prices for the mounts was somewhere in the vacinity of $186.00.
Some owners , which are mechanically included ,have designed a series of their own mounts to attach bags.
You might be able to configure a mount of your own but feel it would require more than the simple 4 pieces of metal that you are viewing ( IMHO).Remember that on the 650 ( if that is what you have),you must also have access to the gas cap for fueling.
A few forum users may reply ,to your post, that have built ( or acquired) their own mounting systems for saddle bags. Most seem to reply to install a top case, as opposed to saddle bags, for storage, but I like saddle bags more ( It's on old BMW thing for me
Some might suggest "soft" luggage but I have found other users that cannot keep them "tight" on the bike , at speed, without them "rubbing" against the side finish of the bike.
So until the mounts are either more easily available ,or produced by a forum user here, all I can do is dream....