A couple of years ago I bought a carrier/pannier mount set from Hepco & Becker for my Corsa, and after fitting a pair of old Krauser panniers the system performed flawlessly on a trip to Breganze in Italy for a Laverda club meeting.
I always wanted to see if I could make the system fit POP, just to see what options I had.
So, I dug ut the carrier/pannier mounts and started test fitting them.
It was quickly obvious that it maybe would work so I fabricated some additional brackets. The plan was to use the mounting brackets for the Corsa without having to cut them to fit POP. In the end I did have to slightly bend some of the brackets but it would not stop me using them on the Corsa again if required.
I still need to finesse the mounting system and fabricate a couple more supports but at the moment the system is rigid and self-supporting. Not bad for half a day's effort.