Porsche 718-Based Stärke Speedster Review: Vintage Soul Meets Modern Engineering
The intersection of classic automotive romance and contemporary supercar usability has long been a holy grail for boutique coachbuilders. At the prestigious Air|Water Porsche gathering in Southern California, custom vehicle manufacturer Stärke Motor Company unveiled its highly anticipated second-generation prototype. Rather than cutting up rare vintage iron or assembling a traditional restomod, the firm chose a brilliant foundational platform: the modern Porsche 718 Boxster. The resulting Stärke Speedster delivers a captivating marriage of mid-century racing aesthetics and cutting-edge Stuttgart engineering, proving that old-school charm and modern reliability can successfully coexist.
Crafting a Modern Icon on a Proven Chassis

Following the Southern California automotive showcase, Stärke CEO Seth Gortenburg remained on the West Coast to host exclusive media evaluation sessions. Taking the prototype out for a spin along the winding coastal stretches of the Pacific Coast Highway in Malibu provided the ultimate backdrop. It was an ideal environment to evaluate how a vintage-inspired speedster translates into the modern era, invoking the spirit of timeless icons like the 550 Spyder and the 718 RSK, while incorporating the low-slung stance of early 356 Cabriolets.
At first glance, the visual impact is striking. The vehicle sits wider, lower, and smoother than any of its historic spiritual predecessors. Achieving this bespoke aesthetic required two years of intensive development, utilizing 3D scanning, computer-aided design (CAD) renderings, and hand-laid composite body components. Transforming a stock Boxster into a Stärke Speedster is no superficial body kit installation; it requires stripping away factory sheet metal, altering the doors and rear quarter panels, and meticulously bonding the front clip to factory mounting points. The side strakes are expertly integrated to feed the original engine air intakes without compromising cooling efficiency.
Engineering Excellence Meets Hot-Rod Culture
Purists often look sideways at coachbuilt conversions, but spending time behind the wheel quickly dispels any structural or quality concerns. Rooted in an American hot-rodding philosophy, Gortenburg’s attention to detail shines through. The metallic silver finish exhibits exceptional depth, panel gaps align with factory precision, and the cabin remains free of creaks or chassis flex over uneven pavement.
Stärke can transform any 2017-and-onward 718 Boxster variant. Buyers can supply everything from the introductory 300-horsepower turbocharged flat-four to the high-revving, naturally aspirated 394-horsepower GTS 4.0. Transmission choices include a precise six-speed manual or a lightning-fast seven-speed PDK dual-clutch automatic. Because the fiberglass panels match factory weight parameters, the vehicle retains the legendary driving dynamics of the original donor platform.
The test car started life as a base turbo model equipped with a dual-clutch transmission. While lacking the spine-tingling exhaust note of the GTS 4.0, it demonstrated why the platform remains a benchmark for balanced handling. The low center of gravity and well-sorted suspension absorb road imperfections gracefully, making long weekend coastal cruises effortless.
Modern Comforts Without Losing the Essence
One of the greatest advantages of this coachbuilding approach is everyday usability. Traditional vintage roadsters require constant carburetor tuning, valve adjustments, and regular fluid leak management. In contrast, the Stärke Speedster retains modern power windows, an effective air conditioning system, a power-operated top, and electronics that any certified Porsche technician can service with ease.
Gortenburg acknowledges that while vintage lines are breathtaking, drivers today appreciate modern climate control and creature comforts. Upgrading to optional carbon fiber body panels reduces overall weight by a few hundred pounds, further sharpening agility and cornering response. The primary ergonomic consideration during spirited driving involves the extended front overhang and low ride height, making a front-axle lift system a worthwhile investment for navigating steep driveways or urban speed bumps.
Customization, Pricing, and Market Value
As production of the mid-engine 718 generation concludes, used market values for clean donor cars are climbing, making coachbuilding a compelling alternative to traditional restorations. Base donor vehicles paired with a PDK transmission offer an accessible entry point, while high-spec GTS 4.0 manuals command a significant premium.
The baseline conversion starts at $135,000, or roughly $189,000 when commissioning Stärke to source the donor vehicle and complete bespoke interior trim work. Each build requires approximately six months of meticulous craftsmanship, including twelve weeks dedicated entirely to body panel fabrication. Buyers can select timeless exterior paints like metallic silver or rich black, paired with cabin treatments ranging from solid leather to retro Pepita houndstooth upholstery.

Ultimately, the Stärke Speedster bridges two different automotive worlds. It offers the visceral emotional pull of classic motorsport design combined with the dependable daily drivability of a modern sports car.
Are you ready to turn heads on your favorite coastal route with a bespoke masterpiece tailored to your exact taste? Reach out today to discuss donor car selection, custom interior specifications, and securing your build slot for a truly unique driving experience.

