First introduced to the WeatherTech GTP class, GTD Pro and GTD will sport similar hardware at the Rolex 24 making it easier to mandate and adjust performance.

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 ...

IMSA president John Doonan says that GTP manufacturers tell him they want to hire American drivers, but where will those drivers come from? Being elbowed out by drivers who get their training in ...

From the unmistakable shrill howl of the four-rotor 1991 Mazda RX-7-001 GTO to the thundering Chevrolet V-8 growl of a 1985 ...

The winning overall team in this year’s Rolex 24 At Daytona was hammered by sanctioning body IMSA on Wednesday for ... There also will be no change to GTP manufacturer points.