The SRT Motorsports team, along with the BMW Team RLL and Risi Competizion, all returned to Road America with proven cars; having raced at Road America in the past with the same setup.
Corvette Racing, Porsche North America, and Team Falken Tire have all upgraded to new cars for 2014. Upgrading allowed the Corvette C7.R and the Porsche 911 (991) RSR to win the first 6 rounds of the TUDOR USCC.
This isn't the first time the C7.R has seen Road America. The team stayed at the track after ALMS last year to test the new car. They also came back again this year after Mazda Raceway to test out the track once more. The team clearly brought that experience to the track with them.