The Continental Tire Sports Car Challenge features the Boss 302R in the GS series. They missed the 2011 championship by that much. I've already got the September dates on my calendar. I've never been to it but I always enjoyed watching the Belle Isle CART race on TV when it was held there.
http://www.grand-am.com/news/index.cfm?series=r&cid=50891
GRAND-AM Rolex Series 2012 Schedule of Events
Jan. 28-29 Daytona International Speedway
Mar 30-April 1 Barber Motorsports Park
April 27-29 Homestead-Miami Speedway
May 11-13 New Jersey Motorsports Park
June 2 Detroit Belle Isle
June 8-10 Mid-Ohio Sports Car Course
June 22-24 Road America
June 29-July 1 Watkins Glen International
July 27 Indianapolis Motor Speedway
Aug 10-12 Watkins Glen International
August 17-19 Circuit Gilles Villeneuve
Sept. 7-9 Mazda Raceway Laguna Seca
Sept. 28-30 TBA
GRAND-AM Continental Tire Sports Car Challenge 2012 Schedule of Events
Jan. 27 Daytona International Speedway
Mar 30-April 1 Barber Motorsports Park
April 27-29 Homestead-Miami Speedway
May 11-13 New Jersey Motorsports Park
June 8-10 Mid-Ohio Sports Car Course
June 22-24 Road America
June 29-July 1 Watkins Glen International
July 27 Indianapolis Motor Speedway
Sept. 7-9 Mazda Raceway Laguna Seca
Sept. 28-30 TBA
http://www.grand-am.com/news/index.cfm?series=r&cid=50891
GRAND-AM Rolex Series 2012 Schedule of Events
Jan. 28-29 Daytona International Speedway
Mar 30-April 1 Barber Motorsports Park
April 27-29 Homestead-Miami Speedway
May 11-13 New Jersey Motorsports Park
June 2 Detroit Belle Isle
June 8-10 Mid-Ohio Sports Car Course
June 22-24 Road America
June 29-July 1 Watkins Glen International
July 27 Indianapolis Motor Speedway
Aug 10-12 Watkins Glen International
August 17-19 Circuit Gilles Villeneuve
Sept. 7-9 Mazda Raceway Laguna Seca
Sept. 28-30 TBA
GRAND-AM Continental Tire Sports Car Challenge 2012 Schedule of Events
Jan. 27 Daytona International Speedway
Mar 30-April 1 Barber Motorsports Park
April 27-29 Homestead-Miami Speedway
May 11-13 New Jersey Motorsports Park
June 8-10 Mid-Ohio Sports Car Course
June 22-24 Road America
June 29-July 1 Watkins Glen International
July 27 Indianapolis Motor Speedway
Sept. 7-9 Mazda Raceway Laguna Seca
Sept. 28-30 TBA