Italian coachbuilder Castagna Milano has proposed one of the most radical transformations yet of the Alfa Romeo Giulia Quadrifoglio, turning the performance sedan into a two seat, open top grand tourer. The project features an entirely redesigned body, dramatic styling and extensive use of carbon fibre, but it still needs a buyer willing to commission the one off.

Almost everything changes visually. The familiar triangular Alfa Romeo grille remains, but it is surrounded by a sharp front end, recessed headlights and distinctive fang shaped LED lighting. Wider wheel arches, a sculpted rear section, an active spoiler and stacked exhaust outlets give the car a much more exotic appearance.

The proportions are equally unusual. Castagna proposes moving the front seats and driving position approximately 330 mm rearwards, creating a longer bonnet and a more traditional Italian grand touring silhouette. The cabin would feature wood trim and two types of leather, while a folding fabric roof would allow open air driving.

Underneath, the project retains the Giulia Quadrifoglio’s 2.9 litre twin turbocharged V6, reported at 520 hp. Castagna targets a kerb weight of around 1,420 kg, thanks in part to the proposed carbon fibre bodywork. That figure remains unverified because the finished car has yet to be built.

This is not an official Alfa Romeo model or a production bound factory special. Castagna Milano is offering the design as a bespoke commission and will need a customer to fund its construction.

If it becomes reality, this unusual Giulia could join a very small club of coachbuilt Alfa Romeo specials, following projects such as the Giulia SWB Zagato. For now, it remains an ambitious Italian design proposal waiting for its first owner.