The 997.1 “race cars” market comprises privately prepped 2005–2008 911 track cars—often Carrera,  Carrera S, Carrera 4S, and occasional narrow‑body Turbo or early GT2 conversions—modified for competitive use but retaining basic road‑car origins. These builds typically feature upgraded suspension (e.g. GT3 supension part swaps, coilovers, reinforced subframes), big‑brake kits with fluid flushes, lightweight wheels and track tires, and safety gear (roll cages, harnesses, fire suppression), but lack the full homologation elements of factory Cup or GT3 models. Enthusiasts report that even a lightly modified 997.1 C2S delivers dramatically different track performance versus road use, feeling like “two different cars". These private builds offer a bridge between street comfort and circuit capability at a lower entry cost than factory race models.