Using the underpinnings from a rare Ferrari F12tdf, the SP3JC is a very special bespoke roadster. It wields a 770bhp 6.3-litre V12 engine for the ultimate wind in your hair experience.

While most of the automotive world is focused on the debuts at the Los Angeles Auto Show, our eyes turn to Maranello, Italy, where Ferrari unveils the unique SP3JC. Using the chassis and drivetrain from an F12tdf, a client commissioned the Prancing Horse's styling centre to create this take on a grand-touring roadster. The craftsman there laboured more than two years to bring the customer's desired shape into the real world.

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The SP3JC retains the F12tdf's long-hood-short-rear-deck proportions, but the design team makes tweaks to many of the panels. The front facia now appears to be smiling at motorists, and there are more prominent intakes in the corners. Two transparent panels now make the engine visible, too, and the driver might even be able to see it rumbling through the windshield.

Coachbuilt Ferrari SP3JC revealed as one-off V12 roadster
Coachbuilt Ferrari SP3JC revealed as one-off V12 roadster

Where the F12tdf's fender vent exits through the top of the panel, the resculpted sides now have air exiting lower down. This change also flows into the doors that have less prominent creases than those of the coupe. A pair of carbonfibre roll hoops now sit behind the seats and a narrow wing connects them.

The SP3JC's rear has little in common with the F12tdf. Pairs of circular taillights replace the coupe's single lamps on each side. The louvered rear bumper looks like a product from Gilette. The exhaust surrounds are also more curvaceous than the pieces on the F12tdf.

Ferrari explains the SP3JC's odd colour scheme as stemming from the client's "passion for Pop Art." The machine features an Azzurro Met (blue) nose and Bianco Italia (a shade of white with strong hints of silver) over the rest of the body. Giallo Modena (yellow) adorns the hood's horizontal stripe, the number 3, and portions of the nacelles.

Coachbuilt Ferrari SP3JC revealed as one-off V12 roadster

Ferrari doesn't offer any photos of the cabin but says that the seats are blue leather with white inserts. The lower section of the dashboard also features blue leather, and the colour appears on the stitching throughout the interior, too.

The powertrain consists of the F12tdf's 6.3-litre V12 with 769 horsepower (574 kilowatts) and 520 pound-feet (705 Newton-meters) and seven-speed dual-clutch gearbox. The coupe was able to run to 62 miles per hour (100 kilometres per hour) in 2.9 seconds and to a top speed of 211 mph (340 km/h). Open-roof machines generally sacrifice some performance to their coupe counterparts, so the SP3JC might be a little slower but probably not much.

Gallery: Coachbuilt Ferrari SP3JC revealed as one-off V12 roadster