Just when you didn't think the Mercedes G-Class could get any more extreme, spy shots and videos have shown the mighty 4x4 Squared is making a comeback. But this is tame compared to the crazy six-wheeled Mercedes-AMG G63 built during the SUV's previous generation.

Only around 100-160 units of the six-wheeled behemoth were built, making it an extremely rare sight on the road. This version stands out from the rest, however. Built by South Florida Jeeps (So Flo Jeeps), this custom off-roader started life as a standard 2017 Mercedes-AMG G63 before being converted into a 6x6.

To improve its off-roading capability, the custom off-roader sits on 22-inch aluminum wheels wrapped in chunky 37-inch Baja tires. As if the six-wheeled AMG G63 didn't already have enough presence, it also features a 60-inch-long bed finished in teakwood, transforming it into a 6x6 pickup.

Thanks to a custom nine-inch differential and a middle axle that powers the rear four wheels, this is a true 6x6 off-roader. Combined with the extra wheels, massive eight-inch carbon fiber fenders give the AMG G63 a meaner look. Additional modifications include a carbon fiber Brabus overhead light bar, a 4.5-inch suspension system with Fox reservoir shocks, and a custom aluminum roll cage.

A lift kit also raises the ride height by five inches, giving the AMG G63 more ground clearance. Custom hood accents round off the exterior enhancements. Inside, the cabin is even more luxurious, fitted with plush leather seats and a starry night sky headliner normally reserved for opulent Rolls-Royce cars.

Under the hood, the AMG G63 6x6 is powered by a 5.5-liter V8 tuned to produce 700 horsepower and 600 lb-ft of torque, up from 563 hp and 561 lb-ft in the stock AMG G63.

This one-off AMG G63 6x6 will be sold with no reserve at the upcoming Barrett Jackson Scottsdale sale on March 27, where it's expected to fetch over $1 million. So Flo Jeeps can also convert your current G-Class into a six-wheeled pickup, with conversions starting at $175,000.