Class - New Weight Breaks for the old GT Classes and Indexes
GT/AA- 6.00 to 6.49 - Index -- 9.70
GT/BA:- 6.50 to 6.99 - Index -- 9.80
GT/CA -7.00 to 7.49 - Index -- 9. 90
GT/DA- 7.50 to 7.99 - Index -- 10.00
GT/EA- 8.00 to 8.49 - Index -- 10.10
GT/FA- 8.50 to 8.99 - Index -- 10.25
GT/GA- 9:00 to 9:49 - Index-- 10.40
GT/HA- 9:50 to 9.99 - Index -- 10.50
GT/IA -10:00 to10:49 - Index -- 10.65
GT/JA- 10:50 to 10.99 -Index -- 10.80
GT/KA- 11.00 to 11.49- Index -- 10.90
GT/LA- 11.50 to 11.99 - Index -- 11.05
GT/MA- 12.00 to 12.49-Index -- 11.20
GT/NA -12.50 to 12.99 -Index -- 11.30
GT/OA -13.00 to 13.49 -Index -- 11.45
GT/PA- 13.50 to 13.99 - Index-- 11.55
GT/QA -14.00 or more - Index-- 11.75
Mim weight is 2670 with Driver
Please Verify Your Class with the Rule Book Section 11B Page 11

and double check the indexes
I suspect if NHRA does not change the Data Information in the Drag Strips Computer before the race at each track there may be some huge issues in Qualifying .Just a thought .