Before the 812 Superfast launched in 2017, the F12berlinetta was Ferrari's flagship V12-powered grand tourer. With a naturally aspirated 6.3-liter V12, the F12berlinetta produced 731 horsepower and 508 lb-ft of torque. With no forced induction, it's roaring V12 sounded superb.

But Aaron Kaufman wanted to extract more power from the F12berlinetta and has been working on a custom twin-turbo build since last year. Kaufman has been chronicling the progress of the project on the Daily Driven Exotics YouTube channel, and while the pandemic caused delays, the custom twin-turbo F12berlinetta is finally complete.

To increase the output, Kaufman has added a pair of massive turbochargers. The only problem? Since it was never designed to accommodate a pair of turbochargers, the space in the engine bay was extremely limited, making it difficult to make any modifications. To overcome this, the hood was removed and some components such as the throttle bodies and charge pipes were relocated. Most of the original components were kept in their original place, however. With limited space in the engine bay to work with, the two prominent turbochargers have to poke out from the hood.

The twin-turbo Ferrari F12 hasn't been tested on a dyno yet, but Daily Driven Exotics estimates the modified powertrain now produces around 1,500 horsepower. That makes it considerably more powerful than the 986-hp SF90 Stradale.

No performance specifications were mentioned, but the boosted output should make the modified F12 significantly faster than the standard car. Without any modifications, the F12 will accelerate from 0-60 mph in 3.1 seconds and reach a top speed 211 mph. The completed build was recently shown off at Santa Ana, California, where it attracted a lot of attention from crowds.

We get to hear the turbocharged F12 rev up to 8,000 rpm, and it sounds ferocious. Let's hope we get to see the modified F12 unleashed onto the track soon to find out how increasing the output to 1,500 hp has affected the performance.