Modern Vespa

By any chance does anyone out there happen to own both a Nolan N103 modular helmet (in a smaller size, ideally in a "Small") and a LX scooter with the Vespa LX model topbox?

Last year I wanted to buy a N102 here, but it just did not seem to be possible to fit the N102 into either the LX150 petcarrier OR into the top box, and we tried lots of angles/trick/configurations to get in into the topbox and then get the topbox to latch. It was just a tiny smidge (a few millimeters) too big in each position for the topbox latch to close/lock. So, I sadly didn't buy the N102, although the size small was a nice fit to my head.

I am now looking at the the N103 with the inner visor, and liking what I see, and the shell doesn't look identical to the 102, so maybe the proportions are slightly different... unfortunately, I can't check for myself if it can fit into my topbox because the N103 is NOT sold over here (Australia). I'll be in the US in August and am thinking of buying (after trying on) a N103, but I won't necessarily have an LX topbox around over there to check if the N103 will fit?

Any help (from an owner or dealer who can check) to confirm if N103 fits in a Vespa LX topbox in any configuration would be hugely appreciated?

I don't know specifically, but NONE of my XS or XXS fullface or modular helmets fit in the LX topcase. If you want to secure or hide the helmet, get a Givi.

My current HJC modular fits in the LX topcase just fine... as did the modular I owned previously. I have found 4 or 5 different ones that will fit by trial and error?

The Nolans appear to be "compact" like the other helmets that do fit in the LX topcase, but the 102 was just a shaving too big