IMSA President John Doonan has teased further growth for IMSA’s GTP class in the coming years during today’s pre-Rolex 24 press conference. Doonan spoke directly about the potential for additional ...

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 ...

signaling a shift of their Pro group to the GTP program. The most notable story here is Pfaff given the team’s recent news of financial troubles. A team that has been a staple on the IMSA grid ...