There’s usually a pattern with builds like this. You start with something pure (read: Porsche 993), refine it over time, maybe add power, maybe add tech, and eventually you land somewhere more polished than where you began. Gunther Werks didn’t follow that path.Instead, it saved the most extreme version of its Speedster for the very end, pushed it further than anything it had built before, and then closed the chapter entirely. No follow-up, no continuation, no watered-down version that carries the idea forward. That decision is what makes Project Endgame interesting. Not just because of what it is (which is very cool), but also because of when it shows up...and what it replaces. The Speedster Formula Finally Breaks Its Own Rules Gunther Werks Project Up until now, the Speedster program had a clear identity. Every build leaned into the same core philosophy, centered around naturally aspirated power, lightweight construction, and a driving experience that stayed as close to the original air-cooled character as possible.That consistency is what made the cars feel cohesive. You knew what you were getting, even as each commission became more detailed and more refined.Project Endgame doesn’t follow that formula. This is the only Speedster that Gunther Werks has ever built with forced induction, and that changes the car's entire personality. It moves away from the linear, high-revving feel the earlier builds were known for, replacing it with something much more aggressive and immediate. What stands out is that this doesn’t feel like a natural progression. It feels like a deliberate decision to hold back the most extreme version until the very end, when there was nothing left to preserve. 840 Horsepower Turns This Into Something Completely Different Gunther WerksAt the center of Project Endgame is a 4.0-liter twin-turbo flat-six developed with Rothsport Racing (same one from the Monterey Car Week Slantnose build), producing 840 horsepower and 660 lb-ft of torque. It still revs to 7,500 rpm and still routes power through a six-speed manual to the rear wheels, but the way it delivers that power changes everything about how this car would feel to drive. Instead of building momentum the way earlier Speedsters did, this one has the kind of output that immediately reshapes the platform's limits.When you pair that with a curb weight of just over 2,600 pounds, you start to understand where this sits within the Gunther Werks lineup. This is the highest power-to-weight ratio the company has ever achieved, and it pushes the 993 platform into territory it was never originally designed to handle.Even the supporting hardware is bonkers. The twin air-to-water intercoolers are plated in 24-karat gold, not as a visual statement but for thermal efficiency. Individual throttle bodies and a motorsport-style flat fan system reinforce the idea that this wasn’t built to look fast, it was built to actually sustain that level of performance.Gunther WerksGunther Werks Project Endgame – Key Specs This Is What Happens When There Are No Constraints Gunther WerksOnce you get past the performance, the rest of the car starts to make more sense. This wasn’t designed to fit within a broader lineup or meet a specific price target. It was built around a single client, which means every decision could go further than it normally would. The carbon-fiber bodywork is widened and reworked to accommodate the turbocharged setup while maintaining proportions tied to the 993 silhouette. The finish alone took three weeks to complete, with a layered True Candy Red that changes depending on how the light hits it.Gunther WerksThen there are the details that you would never see on a standard build. Gold plating reappears on the mirror and headlight bezels, and inside, the gear lever is finished in 24-karat gold and set with six gemstones arranged in the shift pattern. It’s excessive in the most exciting, Gunther Werks-esque way possible. That’s also where this car introduces something new: Project Endgame is the first example of Gunther Werks’ GWX program, which takes customization beyond what the original Speedster program allowed. Instead of refining a formula, it removes the formula entirely. Gunther Werks Built The Peak Version And Chose Not To Repeat It Gunther WerksProject Endgame closes out the Speedster program entirely while marking the start of something different for the brand. Rather than continuing to evolve this platform, Gunther Werks chose to build one version that goes further than anything else it has done and leave it there. It isn’t just the fastest Speedster they’ve ever built, and it isn’t just the most extreme interpretation of the 993 platform. It’s the final version of an idea that they decided not to revisit, and I can respect that.