The McLaren 675LT is an outstanding car. It impressed us on our first drive, and somehow, it's even faster than the obscenely quick 650S. Twenty-five lucky owners, however, have been given the opportunity to purchase a car that's even more hardcore and entirely customized—the McLaren MSO HS.

McLaren Special Operations (or MSO) is where you go if you want to add a few bespoke touches to your car. But the HS goes even further, starting with only the chassis from the 650S and allowing owners to have a hand in customizing every remaining detail of their vehicle. That means that while McLaren has announced the preliminary specs of this particular car, the remaining 24 cars will vary significantly.