IMSA has published the 56-car provisional entry list for the 73rd annual Mobil 1 Twelve Hours of Sebring, set for Saturday, March 15.

All eyes — and ears — will be on the new Aston Martin Valkyrie AMR-LMH in its IMSA WeatherTech SportsCar Championship debut at Sebring. Ross Gunn, Roman de Angelis and Alex Riberas will drive the No. 23 Aston Martin THOR Team Valkyrie in its maiden voyage, hoping to reach the checkered flag in what is arguably the most demanding endurance race on the IMSA calendar.

The new Valkyrie headlines a 13-car GTP field alongside the Daytona-winning No. 7 Porsche Penske Motorsport 963 of Felipe Nasr, Nick Tandy, and Laurens Vanthoor.