This is a 1966 Porsche 906 Carrera 6 and while the name may not ring a bill, it is an important model in the brand’s rich racing heritage and at RM Sotheby’s Miami auction running from March 1-2 is expected to sell for between $1.8 million and $2.2 million.

Porsche launched the 906 as a replacement for the 904 GTS race car and based it around the 911. It is underpinned by a multi-tubular spaceframe chassis and just 65 examples were ever built, 52 of which were powered by a 2.0-liter six-cylinder with 210 hp. The 906 Carrera 6 enjoyed plenty of endurance racing success, claiming victories at the Targa Florio and Paris Grand Prix as well as class wins at Daytona, Sebring, Spa, and Monza.

The 906 Carrera 6 heading to auction next month is chassis number 906-127 and is finished in Signal Red paint. It was delivered in March of 1966 and was raced extensively, winning the 2-Liter European Hillclimb Championship in 1966, claiming victory in 10 of the 14 events held. It also raced through the 1968 European Mountain Championship before trading hands and being driven by Kurt Hild in the 1969 and 1970 seasons.

Read: Porsche 906 Hommage Is The Race Car The World Needs To See

The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of

While it is common for race cars nowadays to be retired after a single season, the 906-127 continued to race in 1971 and 1972 before being sold to a buyer in 1973 who swiftly raced at that year’s Macau Grand Prix. When the car was finally retired from racing, it had competed in over 80 events and achieved more class wins than almost any other 906.

Near the start of the 21st century, the car underwent a three-year restoration and would go on to take out wins at the Rennsport Reunion in Daytona and the Amelia Island Concours d’Elegance in 2009. The stock Carrera 6 engine has been replaced with a 2.3-liter mill with 228 hp and 176 lb-ft (239 Nm) but the winning bidder will be supplied with the original engine, now fitted to a stand.

The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of
The $2.2 Million Porsche Racing Car You’ve (Probably) Never Heard Of