Straight from NHRARACER.com

Competitors in the popular SS/AH and Factory Stock Showdown (FSS) will now also have classes within Competition Eliminator in which to compete at all NHRA Lucas Oil Drag Racing Series divisional and national events. All rules for FSS and SS/AH will apply and competitors will be required to utilize the Sunoco spec fuel for Competition Eliminator. In addition, competitors will be need to acquire a Competition Eliminator license.
The class designations and indexes will be as follows:

- AH/SM (Hemi cars) will run off a 8.75 index
- FS/SM (FSS cars) will run off a 8.47 index