Grand Touring Prototype (GTP) is the pinnacle of endurance racing in IMSA. Hear as drivers explain the finer details of their class as Leigh Diffey highlights the prominent names and teams to know ...

Penske also returned to IMSA in 2017 with Acura and later switched to lead Porsche's GTP program, which won the 24 Hours of Daytona and the GTP championship last year. Like Brown and McLaren ...