I just had quite a moment trying to fit my new Vespa VJ helmet in the under seat storage of my 2013 Vespa 300 GTS Super Sport. After several minutes I finally managed to shut the saddle, but it was quite a struggle.

I wonder if anyone has modified the newer helmet compartment (2014-) to fit older Vespas? When I compare them on photo they seem to be quite similar, maybe I only need to cut off some plastic in the corners to make the newer one fit, or are they radically different? Does anyone know?

Old one (mine):
https://www.sip-scootershop.com/en/products/helmet+case+piaggio+_pi621155

New one (which I would like to modify):
https://www.sip-scootershop.com/en/products/helmet+case+piaggio+_pi000860