Thanks to the acclaimed Giulia Quadrifoglio that's essentially Italy's answer to the BMW M3, Alfa Romeo is finally back on form. But this isn't the first time the Italian automaker has tried to dethrone the formidable M3.

Back in the 1990s, Alfa Romeo was planning to produce a Stradale version of the 155 to celebrate the car's success in the DTM Championship, Superturismo Championship, and the Spanish and British Touring Car Championships. A 155 GTA Stradale concept was built, but the project sadly never entered production. However, a rare opportunity has emerged to own the Giulia Quadrifoglio's one-off precursor.

Designed by legendary Abarth engineer Sergio Limone who helmed the legendary Lancia 037, the 155 GTA Stradale was based on the 155 Q4, which features a four-wheel-drive set-up evolved from the Lancia Delta Integrale with a heavier cast iron rear differential. Its engine was prepared to Group N competition specifications, and the body was modified with larger wings, racing-inspired front and rear bumpers, and a large rear spoiler. The suspension and interior were also upgraded.

Unfortunately, the project was ultimately scrapped as Fiat felt the car needed a more powerful six-cylinder engine, which would not have fitted the compact Delta Integrale drivetrain. It also couldn't justify the costs required to run a separate production line.

After the concept debuted at the Bologna Motor Show, it was briefly used as the medical car during the 1994 Italian Grand Prix at Monza. After remaining in storage, the one-and-only Alfa Romeo 155 GTA Stradale in the world was recently restored to its former glory and is looking for a new owner. Bonhams estimates it will fetch around €200,000 ($230,000) when it goes under the hammer in Italy later this month.