
An Italian coachbuilder wants to transform the Alfa Romeo Giulia Quadrifoglio into a two-seat convertible, complete with carbon-fiber bodywork and a very French-looking front end. The donor car is already one of the most distinctive sports sedans on the market, but Castagna Milano believes it can be even more special.
The Italian coachbuilder has unveiled plans for a one-off, open-top version of the performance sedan, reimagining it as a two-seat grand tourer with radically redesigned bodywork. There's just one catch: The proposed front end looks suspiciously like something Peugeot might have designed. Those fang-like daytime running lights are hard to ignore, and once you spot the resemblance to the French brand's styling, it's difficult to unsee it.
Of course, the rest of the car goes well beyond a simple styling exercise. Castagna Milano envisions a bespoke creation with extensive carbon-fiber bodywork, a dramatically elongated hood, and proportions that bear little resemblance to the aging-but-still-excellent sedan underneath.
The transformation would involve moving the front seats 330 millimeters (11.8 inches) farther back to make room for a much longer hood. The redesigned hood would sit 40 mm (1.6 inches) lower than the standard item and feature a large exposed carbon-fiber section. At the front, angular, Y-shaped elements would create brake-cooling ducts while partially concealing the headlights. Castagna Milano would also widen both tracks to match those of the hardcore Giulia GTAm and add pronounced fender extensions.
At the rear, a cutout beltline would sweep around the body and incorporate the taillights. A diffuser and active rear spoiler would complete the look, giving the bespoke convertible a more aggressive stance than the standard Quadrifoglio.
For now, Castagna Milano's Giulia Quadrifoglio cabriolet exists only as a digital design proposal. The coachbuilder needs to find a customer with deep pockets and a genuine appreciation for Alfa Romeo to commission the one-off project.
The company also sees the car as a statement about independent coachbuilders at a time when automakers increasingly handle personalization and design in-house. Whether this proposal becomes reality remains to be seen.
Still, the idea of a lightweight, carbon-bodied Giulia convertible with a twin-turbo V6 sounds appealing on paper. We're just not entirely convinced by the Peugeot-inspired face. If the project goes ahead, let's hope the final car looks more unmistakably Italian than French.
It also makes us wonder why Alfa Romeo didn't expand the Giulia family with a coupe, a convertible, or even a wagon to take advantage of economies of scale. It's too late for that to happen with the current generation, but coachbuilders are happy to fill the void for the right price.
Case in point, Castagna Milano isn't the first company to see an opportunity to make the Giulia far more exclusive. Back in 2022, Zagato unveiled the Giulia SWB Zagato, a striking two-door coupe developed to celebrate the design house's long relationship with the Italian automaker.
Unlike Castagna Milano's proposed convertible, the Zagato was a shortened, fixed-roof coupe with bespoke bodywork and a more traditional grand touring silhouette. It was based on the Quadrifoglio platform and featured the same twin-turbo V6, while also drawing inspiration from the high-performance Giulia GTAm.
The two projects take very different approaches to the same idea: using Alfa Romeo's sports sedan as the foundation for a low-volume, coachbuilt special. Zagato went for a dramatic coupe, while Castagna Milano wants to cut off the roof and create a two-seater with a much longer hood.
You won't find either in an Alfa Romeo configurator, and that's precisely the point. These bespoke creations target customers willing to pay for something far rarer than a standard production car.

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