Modern Vespa

hello everyone, i have a Vespa GTS300 picked up in April.
I would like to start changing the front brake caliper.

I would like to install a Brembo P4 30/34:
https://www.sip-scootershop.com/it/product/pinza-freno-brembo-anteriore-p4-30-34-c_2051657J?usrc=brembo%20gts

i know i need an adapter and i found this form Zelioni:
https://www.sip-scootershop.com/it/product/adattatore-zelioni-per-pinza-freno-brembo-anteriore_ZELA02FB

many say that with 2023 vespas this adapter is no longer compatible, can you help me?

See compatibility list on product website and have a look on The BIG Pre-FL to MY23 compatible / non-compatible Thread

You know that calliper is used on pre 2000 Ducati's ( it is an old design)
If you look at the Sip site it would fit with the adapter
I think a radial calliper is nice and you can pic up a secondhand one for about 125€ and use de zelioni bracket that is on the sip site
You get something like this ,I would ask the guys at SIP if it fits

It should fit , see last line

Supertjeduc what kind of brake and adapter did you use?

About the same adapter as on the second picture ( i have a GTV )
You can buy the one from the SIP site
Brake is a secondhand one from a Ducati , all Ducati callipers will fit

don't see brakes in that list

Supertjeduc thank!
and what about the disk size, i need a larger disk brake or i can use the original one 220mm?

I did a 240 but that was because I have a GTV and that has a big ABS ring