Car enthusiasts were certainly abuzz about all of the high-end vehicles at SEMA 2024, but the two custom Buick Grand Nationals shown here drew particular attention. The cars built by world-renowned Ringbrothers and Dutch Boys Hot Rods were more than just car showpieces; they were statements. Each imparted its own flavor, showing there is much more than one way to make a classic car memorable.
The Ringbrothers “INVADR” – A Subtle Beast
Ringbrothers, known for their jaw-dropping craftsmanship, delivered a Grand National build that could only be described as elegantly ferocious. Nicknamed “INVADR” this build grabbed attention with its rich metallic black paint, a shade that’s subtle in low light but shimmers with depth up close — a modern twist on GM’s anniversary-edition finishes.
The carbon-fiber touches are everywhere but never feel overdone. A custom spoiler extends onto the quarter panels, giving the car a sharp, purposeful edge. Step inside, and the magic continues. The interior stays true to the Grand National’s roots but feels elevated — plush leather, carbon-fiber accents, and meticulous stitching create a space that’s both classic and contemporary. The stick-shift is the cherry on top, reminding you this is a car for purists.
And then there’s the engine. The Invader retains its Grand National soul with a twin-turbocharged 3.8L V6, tuned by none other than Kenny Duttweiler to produce a staggering 1,200 horsepower. A CO2 system works to control boost with the massive turbos, ensuring maximum performance. Even the hood — a subtle nod to the factory bulge — features a Corvette-inspired vent for function and style. It’s a masterpiece that whispers power rather than shouting it.
Dutch Boys’ GNX-Inspired Marvel – Bold and Brash
Across the hall, Dutch Boys Hot Rods unveiled their own take on the Grand National, and it was nothing short of a showstopper. Drawing inspiration from the legendary GNX, this build didn’t just pay homage to the past — it redefined it.
The fender wells have been carefully reworked to house massive wheels, giving the car a low, aggressive stance that feels modern yet entirely at home on this classic. The brushed GNX-inspired vents flow seamlessly into the hood, showing a level of craftsmanship that demands a closer look.
Inside, the Dutch Boys didn’t hold back. The digital dash and reimagined center console are so refined they look like they could have come straight from a high-end luxury car manufacturer. It’s a perfect blend of factory design and contemporary flair.
Under the hood, things get wild. A twin-turbo LS 427 from Mast Motorsports powers this beast, and the engine bay is a work of art. Clean, precise, and utterly intimidating, it perfectly complements the car’s bold exterior.

So, Which One Wins: Ringbrothers or Dutch Boys?
Choosing between these two is almost impossible. The Ring Brothers’ Invader is a celebration of restraint and precision, keeping the Grand National’s iconic V6 heart while upgrading everything around it. Meanwhile, Dutch Boys’ GNX-inspired build is a bold reimagining, a muscle car turned supercar with a twin-turbo LS under the hood.
Both are masterpieces, but if you had to pick just one, which would it be? Share your thoughts and let the debate begin.
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