At Cars and Coffee Monaco I have filmed the limited 1 of 25 McLaren MSO HS.

There's no end in sight for McLaren Special Operations and its attempts at making McLarens even more, well, special. While we found the McLaren 675LT to be an incredibly competent supercar when we drove it, someone at MSO decided the thing needed more power and aerodynamic goodies. We're okay with that. This project was previously leaked as the McLaren 688HS. Now McLaren has released details on the 679-horsepower MSO HS (for High Sport) and it's ridiculous.

Based on the McLaren 650S, the MSO HS is limited to just 25 units, which have already been spoken for and will be entirely customized for their owners. Output from the 3.8-liter twin-turbo V8 engine is up to 679 horsepower (an increase of 13 over the 675LT), while torque stays the same at 516 pound-feet.

To accompany the increase in power, this particular MSO HS features a hilarious amount of carbon fiber. The roof, hood, front bumper, and wing – which is inspired by the McLaren P1 GTR – are all made out of the lightweight material. Not that we doubted it, but the aero package is functional – McLaren claims the MSO HS makes 485 pounds of downforce at 150 mph. And yes, that's a giant scoop on the roof.

McLaren didn't release any performance figures for the MSO HS, but the supercar will surely be just as fast, if not faster, around a track as the 675LT. To help the brave and daring owners that plan to take the car to the track, the MSO HS comes with McLaren Track Telemetry. The feature, which is also found on the 675LT, includes a host of sensors and three cameras to provide data to help the driver go even quicker.

Since MSO will customize each of the supercars to an owner's specifications, pricing hasn't been released, and it's kind of irrelevant since you can't buy one anymore. Given its extremely limited run, more powerful engine, and customizable body, you can be sure the MSO HS's price will surely dwarf that of the 675LT at $350,000.