The thesis work has been developed totally with the collaboration of “MICLA Engineering & Design”, an engineering consulting company active in the automotive, aerospace, railway and boats field. The project has been realised starting from an existing study realised on the body in white of the EVO 37, a restomod vehicle inspired to the Lancia 037, an old competition vehicle. Starting from the actual state of art, where the chassis structure has been realised by tubular frame and carbon fibre components, the new version presents different geometry and position for some brackets and tubes. In particular, the rear strut bar (barra duomi) has been completely re-designed with the integration of the carbon fibre as main material.