A Los Angeles shop has created one of the wildest Mercedes restomods in recent memory by combining two completely different eras of German luxury. The build takes the body of a 1971 Mercedes-Benz 600 Grosser and mounts it onto the chassis and hybrid drivetrain of a 2024 Mercedes-AMG S 63 E Performance.
The car, known as the 600 “Final Boss,” was built by S-Klub LA and led by John Sarkisyan. It debuted at SEMA on the Toyo Tires Tread Pass, where its strange blend of old-world limousine presence and modern AMG performance immediately drew attention.
Unlike many restomods that use replica panels or fiberglass bodies, this build started with a real Mercedes 600 donor car. The original car reportedly once belonged to a mayor in Texas, though its underlying structure was in rough shape before S-Klub transformed it.
Underneath the vintage body sits a modern AMG plug-in hybrid sedan with roughly 800 horsepower and around 1,000 lb-ft of torque. That means this enormous classic-looking Mercedes has the performance hardware of one of the most advanced S-Class models ever built.
A Classic Body Meets A Modern AMG Chassis
The build was far from a simple body swap. S-Klub had to adapt the classic steel Mercedes shell to the modern aluminum-based AMG chassis, which required extensive fabrication because the two materials cannot simply be welded together.
The team used steel plates in key areas so the old body could be attached safely to the new structure. Even then, the original 600 body had to be heavily modified to clear modern suspension components, drivetrain hardware, and electronics.
One major challenge involved the rear strut towers, which initially interfered with the rear window area. The team had to cut and reposition the window frame to make everything fit.
Despite the radical surgery, the finished car still reads clearly as a Mercedes 600. That was intentional, as the builders wanted to preserve the original limousine’s unmistakable identity while giving it a far more aggressive stance.
The Design Blends Old Mercedes With Modern AMG
The front end combines elements of the modern S 63 with the shape and presence of the original 600. S-Klub integrated the AMG bumper, sensors, grille elements, and modern lighting into a body never designed for any of it.
The headlights alone reportedly took months to finalize. The team used renderings, 3D printing, and custom fabrication to make the modern projectors work while maintaining the character of the classic front end.
The car also wears custom flared fenders, green-tinted carbon-fiber details, and re-chromed original trim. The roof, side skirts, and smaller trim pieces use carbon fiber, but the material is applied subtly rather than overwhelming the design.
At the rear, the builders blended S 63 bumper components with custom bodywork to create a diffuser-like lower section. The taillight setup includes parts from the modern Mercedes and even McLaren 570 elements.
The Cabin Is Pure Modern S-Class Luxury
Inside, the Final Boss feels far closer to a modern Mercedes than a 1970s limousine. The cabin retains much of the 2024 S-Class interior, including the seats, controls, lighting, and modern luxury features.
That contrast is part of what makes the car so surreal. From the outside, it looks like a heavily modified vintage Mercedes 600, but from the driver’s seat, it feels like a current-generation AMG flagship.
The team worked to preserve small details from the original car where possible, including the distinctive door-closing sound. At the same time, they retained heating, cooling, power seat functions, and much of the modern car’s comfort technology.
The trunk is finished like a luxury lounge display, complete with custom woodwork, lighting, chrome accents, and storage for high-end bottles. It is exactly the kind of theatrical touch S-Klub is known for.
Getting It To Run Was A Battle
The finished car did not immediately work perfectly after SEMA. According to the builders, the hybrid AMG electronics kept the car stuck in limp mode for months.
Much of the trouble centered on the rear differential and its control module. Because the AMG S 63 E Performance uses a complex hybrid drivetrain and modern electronic systems, removing or relocating sensors created constant communication issues.
The team reportedly removed the rear differential several times while trying to diagnose the problem. Eventually, replacing or reprogramming the affected module brought the car back to life.
Now that it runs properly, the result is almost absurd. The Final Boss drives with modern S-Class smoothness, but it accelerates with the brutal force of a high-performance AMG hybrid.
A Restomod That Messes With Your Brain
What makes the 600 Final Boss so fascinating is the contradiction at its core. It looks like a massive vintage executive limousine, yet it behaves like a modern performance sedan with rear-wheel steering, hybrid torque, and AMG acceleration.
That disconnect is exactly why the build works. It preserves the grandeur of the original Mercedes 600 while giving it the speed, refinement, and technology of a current flagship.
The project also shows how far modern restomod culture has evolved. This is no longer simply about putting a bigger engine in an old car; it is about merging complete vehicle architectures across generations.
S-Klub’s Final Boss may not be subtle, but it is deeply impressive. Turning a tired old Mercedes 600 into an 800-horsepower hybrid AMG limousine is the kind of idea that sounds impossible until somebody is wild enough to actually build it.