For those unfamiliar with this particular model, a bit of background is in order. Built exclusively for the Italian and Portuguese markets between 1988 and 1990, the 320iS was a unique variant of the 3 Series, created to navigate the steep luxury tax imposed on cars with engines over 2.0-litres, a hefty 38% compared to a more manageable 18% for sub 2.0-litre engines. In response, BMW, like other manufacturers, developed high-performance models that complied with these restrictions. Often dubbed the "Italian M3," the 320iS was produced in limited numbers, just 2,540 two-door examples rolled off the production line, a stark contrast to the more than 17,000 E30 M3s built worldwide. Exclusive, indeed. Under the hood sits a 1,990cc version of BMW Motorsport's iconic S14 engine, originally designed for the E30 M3 but downsized to meet tax regulations. Despite its smaller displacement, this high-revving four-cylinder still packed a punch, producing 192 horsepower and paired with the same close-ratio Getrag gearbox as the M3. While the full-fat M3 initially made 195 horsepower (later increasing to 215 bhp), the 320iS had a secret weapon - its 100kg weight advantage, which helped bridge the performance gap. In fact, BMW even had to cap the redline at 7,600rpm to keep it from outshining its bigger sibling, proving just how potent this engine truly was. Further cementing its legend is the fact that Jost Capito - former Williams F1 CEO and Team Principal played a key role in refining the 320iS. His goal? To build the fastest 2.0-liter car in Italy and take the fight to Ferrari's 2.0-liter 308. Now that's a mission we can get behind.