I somehow doubt that it has a full race spec F1 V8 in it with the full 750-800 hp.
F1 engines since the '90s have effectively required an army of people and computers just to get the engine started. The tolerances are so tight on them that if you don't pump pre-warmed fluids into them and wait for the entire thing to get upto the correct temp for a couple hours *prior* to starting the engine, you won't get it to start. They're effectively a seized engine until you get adequate temperature into them.
F1 engines from the era also don't have on-board starters. Someone has to plug an external starter into the back of the car to get the engine running--once again, only after everything has been pre-warmed and the bank of computers says it's OK to do so.... In other words: don't stall it, because using it on public roads, you *will* end up stranded.
The more modern F1 cars with 1.6L turbo V6s and hybrid systems weigh quite a bit more, and thanks to the hybrid system, they can infact restart the engine should it stall. The 2.4L V8s the car in question allegedly has, do not...
And to get 800 hp from a 2.4L V8, you have to rev it to near enough 20,000 RPM. That's what the first couple seasons of V8 F1 engines were doing in 2006-7. The ones that came after wound up with a mandated rev limiter at 19,000, which kept power below 800 hp...
So, yeah, I'm taking the details about this car with a HUGE grain of salt as someone who's watched F1 fairly closely for 25 years now. Virtually none of the manufacturers who made the race engines back then will share the information to let anyone operate those high-strung engines on their own.
If you "buy" a Ferrari Formula 1 car from them, the only thing you can do is request them to deliver the car to a certain race track on a specific day, and they will send the car PLUS the full army of people and equipment required to actually prepare and operate the car.
If this rebel is single-handedly operating this car on his own, and it has electric start, it almost certainly is not a real F1 drivetrain, and it damn sure isn't a normally aspirated 2.4L making 800 hp, as the pure F1 race cars did do in that mid to late aughts period.
There are some drivetrains one can buy that are more user-friendly to be a pretend F1 driver on the street, but they categorically are not going to make that amount of horsepower from such a small displacement.
Just watched one of their videos... definitely doesn't sound to my ears that it's revving quite as high as they claim. It is pretty high, but not 19,000-20,000 high. It also sounds like it idles lower than the genuine F1 engines from the era. Those F1 engines idle at an RPM higher than a lot of road legal cars do at redline... 7,000 RPM is the idle speed for a lot of those engines.
My guess is it's a Cosworth V8 of some kind that does rev a fair bit lower, makes a good bit less power, but is also a lot more usable.
It looks and sounds more like a 'Grand Prix Masters' car from the mid 2000s. Cosworth-based V8 that can rev above 10,000 RPM, but not a whole lot more. More displacement at 3.5L, but with less revs, max power is more like 650hp. Still plenty fast in such a lightweight car, of course...
