Help for searching a part number

Hello,

I need to order a cylinder kit for a vespa GS (gran sport) 150ccm
Can someone tell me which part (part number) at SIP will fit for sure?
I post this on this forum since I do not receive any reply on my e-mails to SIP .
Or can I use another e-mail instead of the contact area.

thanks in advance

W

hello vandowo

which chassis number is it ?

like „ZAPM…“

cause i never heard about an GranSport 150