While the new 992-generation Porsche 911 continues to expand with new model launches like the track-focused GT3, there's still a strong demand for historic ones. The Porsche Classic division specializes in restoring old sports cars from the German automaker's rich history, and now the restoration division is preparing to take on its toughest challenge yet.

As part of the Porsche Classic Restoration Challenge, the division is working with dealers across the US to restore 40 classic Porsches back to their former glory.

According to Porsche, there are more of its classic sports cars in the US than any other market in the world. Many of them have deteriorated over the last few decades and deserve to be preserved. Porsche Classic has been encouraging US dealers to acquire cars in urgent need of a restoration and get them back on the road for years to come.

Among the 40 classic Porsche cars being restored across the US include multiple Porsche 356 models from as early as 1956, 911 cars spanning five generations, transaxle models like the 944 and 928, and the first-generation Boxster, which celebrates its 25th anniversary this year.

A rare slantnosed 1988 Porsche 911 Turbo and a 1989 911 Speedster will be restored along with a 2005 Carrera, which is the youngest car getting a new lease of life. Each car will be restored by trained technicians with access to more than 60,000 unique Porsche Genuine Parts.

Porsche Classic's Restoration Challenge will run until mid-August. After this, one winner from a location in the East, South-Central, and West will enter the final, where the winner will be announced in September. Experts from Porsche Cars North America will decide the winner based on the restoration of the engine, suspension, and interior, as well as documentation such as the Classic Technical Certificate.