Givi Monolock Adapter

[Jwwr]

I have been using a 45 liter Givi Monolock case, It's overkill a lot of times. What I want is something that I can mount to a smaller and cheaper version of a pelican case that lets it mount to the Monolock mount that's already on the bike, so I can change the cases out quickly with out having to change the mounts on the bike. Does something like this exist?