Chassis Certifications are provided through NHRA. There are 3 available dates to choose from: April 21, April 22, and May 20. In order to view the times available on Sunday, May 20th, please click "More Times." The cost is $160 payable to NHRA at the time of service. The certification is good for 3 years. Please be sure to cancel your appointment online or by phone no later than 24 hours before your scheduled time.