Gas Monkey Garage Finished Its Wild Ferrari F6 6x6 — and Wants $1.5 Million for It

Some cars eventually become museum pieces. Others end up in a Texas custom shop where someone decides they need a third axle.

That’s exactly what happened to a Ferrari Testarossa that spent the last year and a half being transformed into one of the strangest Ferrari builds ever created. The finished project is now officially called the Ferrari F6, and it’s hard to imagine the engineers in Maranello reacting with much enthusiasm.

The six-wheel Testarossa first appeared online more than a year ago, immediately drawing attention for its outrageous proportions and ambitious design.

Initially, Gas Monkey Garage planned to build the project in partnership with Danton Arts Kustoms and Frecky Export LLC. That collaboration eventually fell apart, forcing Gas Monkey Garage to complete the car independently.

The final stages of the project were handled by shop founder Richard Rawlings along with John Clay Wolfe from GIVE ME THE VIN. Development took longer than expected, but the build is now complete — and officially up for sale.

Visually, the finished F6 evolved considerably from the original concepts.

The car wears classic Rosso Corsa red paint, though the factory pop-up headlights are gone. In their place are custom fixed headlamp units integrated into a redesigned front fascia. The front bumper also features a dark lower splitter, while widened fenders help accommodate the dramatically altered chassis.

Despite the addition of a second rear axle and four rear drive wheels, the rear section surprisingly stays fairly faithful to the original Testarossa design. The iconic black side strakes and recognizable engine cover remain intact.

The most aggressive styling element is impossible to miss: an enormous rear wing mounted directly to the chassis through exposed supports.

Under the engine cover, the changes become even more controversial.

The original Ferrari flat-12 engine has been removed entirely. In its place sits a supercharged 6.2-liter LT4 V8 sourced from the Chevrolet Corvette Z06 .

Gas Monkey Garage hasn’t released exact output figures for the custom build, but the factory LT4 produces 650 horsepower and 650 lb-ft of torque in standard form.

The engine is paired with a custom transmission setup that sends power to all four rear wheels rather than a single axle. The builders describe the configuration as a form of custom all-wheel drive, although technically the front wheels remain undriven.

The chassis also received a fully independent rear suspension system along with upgraded Wilwood performance brakes.

Inside, the cabin takes inspiration from the legendary Ferrari F40 with a stripped-down, motorsport-focused design. Features include a three-spoke Momo steering wheel, digital gauges, an exposed gated shifter, and Recaro bucket seats with carbon-fiber backs.

The completed Ferrari F6 made its public debut on May 23 through YouTube videos published by Gas Monkey Garage and John Clay Wolfe, including footage of the car on track.

The asking price has already been set at $1.5 million.

Wolfe admitted he’s curious who will be brave enough to buy the machine, while Rawlings described the F6 as the boldest project Gas Monkey Garage has ever attempted.

Ferrari, meanwhile, will probably pretend it never happened.