Hi Dimitris, welcome to the RUMCars Forum. Being the custodian of a somewhat rusty three-wheeler chassis and several engines and gearboxes, I too have been on the lookout for an Isetta bodyshell for a couple of years now. Apart from a very rusty one in Germany, virtually nothing has been offered through the established channels. Lots more chassis than Isetta bodies have survived. Making your own bodyshell from parts that are available, like floor pans, inner wings, wheel arches, bulkheads, would be difficult and very expensive. I seem to remember some kind of Isetta fibreglass electric replica from Harrington Group, if you wish to go down that channel. Good luck, let me know if you find two bodyshells!