Someone Wants To Chop The Alfa Romeo Giulia Quadrifoglio Into A Two-Seater
by AutoExpert | 27 October, 2026
The Alfa Romeo Giulia Quadrifoglio has four doors, room for five, and a twin-turbo V6 under the hood. Castagna Milano looks at that recipe and sees something that could be a lot more outrageous: a low-slung, two-seat sports car with a long hood and a folding fabric roof. It’s an ambitious makeover, and the Italian coachbuilder wants to build it around one of Alfa’s best-known performance sedans.
Castagna Milano has been doing unusual things with cars for a long time. Founded in 1849, the company first made luxury horse-drawn carriages before disappearing in 1954. It returned in the early 2000s and went on to create bespoke cars for customers looking for something beyond the factory options. This Giulia project is still at the proposal stage, and Castagna needs an owner willing to supply a Quadrifoglio for the conversion.
The transformation goes well beyond cutting off the roof and deleting the rear doors. Castagna wants to move the dashboard, steering wheel, and front seats 330 mm closer to the rear axle, making space for a much longer hood. The body would wear new carbon-fiber panels, while the redesigned front end keeps Alfa’s triangular grille and adds slim headlights with claw-shaped daytime running lights. Castagna also estimates a weight of just 1,420 kg, although that figure has yet to be confirmed on a finished car.
At the back, the design gets slim LED taillights, stacked exhaust outlets, a carbon-fiber diffuser, and bespoke wheels. The folding soft top is the key to the whole idea, turning the Giulia into an open-air two-seater. The thing is that removing the roof can reduce body rigidity, so the chassis would likely need extra reinforcement. Castagna hasn’t explained how it would handle that part of the job.
The original Giulia Quadrifoglio’s twin-turbo V6 already gives this project a strong starting point, but Castagna hasn’t announced any confirmed mechanical changes or production plans. For now, it’s a set of renderings rather than a car you can order.
