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ATLANTA - June 30 -- With NASCAR'S traditional Fourth of July racing festival and the fireworks display, the Daytona International Speedway celebrates America's Independence
Day with not only a NASCAR Sprint Cup series event, but the next round of the hotly-contested Rolex Grand-Am Sports Car series as well.

The audience, expected to be the largest of the season at more than 250,000, will be a mix
of sports car and stock car fans as Grand-Am shares the stage with the NASCAR Sprint Car Series. The Grand-Am event, known as the Brumos Porsche 250, is a one-day event, with
practice on July 4 from 8:30-10:30 am, qualifying at 10:45 am and the race starting at 2 pm (all Eastern Daylight times). The NASCAR race will run approximately two hours after the finish of the Grand-Am event.

The Brumos Porsche 250 will be broadcast live on Speed TV 2 pm - 5:00 pm. Live timing and scoring, notes and results will be available on, with regular weekend
updates also posted on

Porsche's chances to win its second Grand-Am race on the 3.56-mile, 14-turn Speedway road course, have slightly increased from the most recent event through another change to the
regulations last week. After the engine revs of the Porsche Riley were reduced by 300 rpm following the successful start to the season, the Porsche engine could not fully utilize its potential in the following races. Now, the Porsche is again permitted top revs of 9,200 rpm for the 520 hp, 911-based boxer engines.

"Now we're back to the status we were at with the Porsche engines in January," said Porsche's head of motorsport, Hartmut Kristen, who has had little tolerance for the three
regulation changes that handicapped the Porsche Riley between the races in Daytona and Watkins Glen.

"It was mainly the change from a six speed to a fifth speed gearbox and back again - these zig-zag decisions of the sporting authority were very hard to understand. For our Daytona
Prototype teams, Brumos and Penske, this made it very hard to work on the performance of the vehicles in a focused and lineal way."

Kristen also pointed out that the stable rules for the other teams has enabled them to develop and improve their cars for the last six months, while the Porsche teams have been forced to start over with setup every time there was a change.

Despite the regulations difficulties, Porsche's factory pilots Timo Bernhard (Germany) and
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