https://www.google.com/search?q=sip+vespa+t5+speedometer&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari#fpstate=ive&vld=cid:9f9ecd5e,vid:4YxevJsLaSw
https://scooterlab.uk/new-sip-speedo-for-vespa-t5-new-product/
Next was a twin cylinder conversion for stock lambretta engine cases!! I think there's a conversion kit for both the small and big block cases? https://www.sip-scootershop.com/en/product/engine-kit-piston-control-scooterthefero-chimera_22010862
https://www.riminilambrettacentre.com/en/pair-of-adjustable-cnc-fork-links-by-casa-performance-for-lambretta.html