|Kahne is using the same chassis he led the most laps with at Las Vegas|
#5-Kasey Kahne: Crew chief Kenny Francis will unload Hendrick Motorsports Chassis No. 5-779 for Saturday night's event at Texas. Most recently, Kahne lined up fourth in this car at the March 10 Las Vegas event, led a race-high 114 laps and crossed the finish line second.
#9-Marcos Ambrose: The No. 9 team has prepared chassis No. 847 for Texas. The team built the chassis in the off-season.
#10-Danica Patrick Chassis No. 10-723: This car debuted in May 2012 at the Coca-Cola 600 at Charlotte (N.C.) Motor Speedway, where Patrick started 40th and finished 30th in just her third Sprint Cup Series start. Patrick then tested the car in October at Kansas Speedway as part of the Sprint Cup Series open test prior to that weekend's Hollywood Casino 400. Chassis 10-723's next on-track activity came in November 2012 at Texas Motor Speedway, where Patrick started 32nd and finished 24th. Since the end of the 2012 season, it was updated to the sixth-generation (Gen-6) Chevrolet SS configuration.
#14-Tony Stewart: Chassis for the NRA 500 is 14-754. Basckup chassis No. 14-707: This car made its first start in May 2012 in the non-points NASCAR Sprint All-Star Race at Charlotte (N.C.) Motor Speedway. It was an unassuming debut, as Chassis No. 14-707 started ninth and finished a quiet 17th. The car sat idle until returning to action for the Labor Day weekend event at Atlanta Motor Speedway. It won the pole and led eight laps early in the 327-lap race, but as day turned to night, the handling of the car deteriorated, leaving Tony Stewart one lap down in 22nd when the race ended. It has since been totally rebuilt with 2013 Chevrolet SS sheetmetal, and was most recently used for the open test March 7 at Las Vegas Motor Speedway before serving as the No. 14 team's backup racecar for the remainder of the weekend. After Thursday's open test at Texas Motor Speedway in Fort Worth, it will serve as the backup racecar for the NRA 500.
#15-Clint Bowyer: Primary chassis No. 764 is new. In 2012 backup chassis (No. 724) raced a fourth place finish at Bristol in March, fifth at Dover in June and finished seventh at Bristol in August. In 2013 it has tested at Charlotte in January and served as the backup at Las Vegas and California.
#16-Greg Biffle: The primary chassis RK-849 is a brand new chassis. Biffle won this race a year ago with a new chassis. The backup chassis RK-809 is the same car that won at Texas a year ago. Since then it's finished fourth in the Coca-Cola 600, fourth in Michigan, 16th at Dover and finished up 2012 with a 10th-place finish at Texas in November.
#17-Ricky Stenhouse Jr.: Primary Chassis: RK- 827 2012 No. 99 chassis -last ran at Homestead - finished 12th. Backup Chassis: RK-811 - 2012 No. 99 chassis
#22-Joey Logano: Primary Chassis:PRS-848. Last Raced: New chassis. Backup Chassis: PRS-844. Last Raced: Backup chassis from Fontana (not used).
#27-Paul Menard will pilot chassis No. 418 at Texas Motor Speedway. This No. 27 Chevrolet SS is a new addition to the Richard Childress Racing stable this season.
#29-Kevin Harvick: will pilot chassis No. 404 from the Richard Childress Racing NASCAR Sprint Cup Series stable in the NRA 500. Harvick drove this Chevrolet twice during the 2012 season, earning a 16th-place finish at Charlotte Motor Speedway in October and a ninth-place result at Texas Motor Speedway in November.
#31-Jeff Burton will race chassis No. 416 this weekend at Texas Motor Speedway. This No. 31 Chevrolet finished 17th at Auto Club Speedway in March after Burton started from the 22nd position.
#39-Ryan Newman Chassis No. 39-748: Newman will pilot Chassis No. 39-748 at Texas Motor Speedway in Fort Worth this weekend. This chassis debuted at Texas last November, when Newman was able to overcome his starting position of 36th and a loose right-front wheel that dropped him from the top-10 to 25th with just 110 laps remaining to record a 12th-place finish. Since then, Chassis No. 39-748 was outfitted with a new front clip and a Chevrolet SS body, and saw its first laps of the 2013 NASCAR Sprint Cup Series season last month at Auto Club Speedway in Fontana, Calif. There, Newman overcame a late-race pit road speeding penalty to finish 10th, earning his third top-10 finish of the season.
#43-Aric Almirola: The No. 43 team has prepared chassis No. 843 for Texas. The team built the chassis in the off-season.
#48-Jimmie Johnson: will drive chassis No. 728, at Texas. Chassis No. 720 serves as the backup.
#55-Mark Martin: Primary 765. Backup 720.
#88-Dale Earnhardt Jr.: This weekend at Texas, crew chief Steve Letarte will unload Hendrick Motorsports Chassis No. 88-726. Earnhardt last raced this chassis to a seventh-place finish at Texas Motor Speedway in November 2012.
#99-Carl Edwards The No. 99 Fastenal Blue Team will unload RK-826 for the weekend, which last ran in Homestead 2012. Backup chassis: RK 831
- compiled by Jayski.com