The Pagani Huayra Epitome features a twin-turbo V12 engine and a manual transmission.

Every supercar and hypercar manufacturer has an in-house customization program, but Pagani expands the range of customization options more than most. At the request of a customer, it built a one-of-a-kind Huayra with a seven-speed manual transmission.

The model is called the Huayra Epitome, and it was developed by Pagani’s subsidiary Grandi Complicazioni. The client’s name has not been revealed, but it appears that this individual played a significant role in creating the unique model by sharing ideas with Pagani founder Horacio Pagani. The planning part of the process took nine months; the construction of the only manual-transmission Huayra required an additional 10 months of work.

“It’s a long and complex process because developing components specifically for a single car takes the same amount of time as developing components for a series production car,” Lorenzo Kercoc, head of Pagani’s Grandi Complicazioni division, said in a statement. Pagani noted that the transmission is a transversely mounted unit built by Xtrac, which makes racing gearboxes. It receives engine output via a three-plate clutch.

Speaking of the engine, it’s a 6.0-liter twin-turbo V12 built for Pagani by Mercedes-AMG. The engine produces 864 horsepower and 809 lb-ft of torque, and exits through a six-way titanium exhaust system. Power is delivered to the wheels via an electronically controlled limited-slip differential and tripod articulated axlesPagani has also equipped the Epitome with a new active suspension system featuring a “Super Soft” mode.

Visually, the car gets redesigned bumpers on both ends, new headlights, and an air extraction system integrated into the front wheel arches. The changes aren’t entirely aesthetic: Pagani added a splitter to the front bumper at the customer’s request to increase downforce. The prominent rear wing is also functional, and the redesigned front air intakes improve cooling. Inside, the highlight is undoubtedly the seven-speed transmission, which is mounted like a precious work of art in a museum.

Time will tell what the future holds for the one-off manual Huayra. It might live in a heated garage and only emerge at the 2070 edition of the Pebble Beach Concours d’Elegance, or you might see it at the next Car and Coffee Show. You’ll know it when you see it.