[Mike Carr]

For a little easier comparison:

STOCK
Class Weight Break Index
FS/A 6-6.49 9.70 (old AAA/S; same index)
FS/B 6.50-6.99 10.00 (old AA/S; same index)
FS/C 7-7.49 10.30 (old BB/S, same)
FS/D 7.50-7.99 10.60 (old CC/S; same)
FS/E 8-8.49 10.95 (old A/S; same)
FS/F 8.50-8.99 11.20 (old B/S; same)
FS/G 9-9.49 11.35 (old C/S; same)
FS/H 9.50-9.99 11.50 (old D/S; same)
FS/I 10.00-10.49 11.65 (old E/S; same)
FS/J 10.50-10.99 11.80 (old F/S; same)
FS/K 11.00-11.49 11.90 (old G/S; same)
FS/L 11.50 or more 12.00 (old H/S; same)

SUPER STOCK
Class Weight Break Index
FSS/A 5-5.49 8.80 (old SS/AAA; same)
FSS/B 5.5-5.99 9.20 (old SS/BB)
FSS/C 6-6.49 9.65 (old SSA)
FSS/D 6.5-6.99 9.90 (old SS/B)
FSS/E 7-7.49 10.05 (old SS/C)
FSS/F 7.5-7.99 10.20 (old SS/D)
FSS/G 8-8.49 10.25 (old E)
FSS/H 8.5-8.99 10.35 (old F)
FSS/I 9-9.49 10.45 (old G)
FSS/J 9.5-9.99 10.55 (old H)
FSS/K 10-10.99 10.55 (old I)
FSS/L 11-11.99 10.80 (old J)
FSS/M 12 or more 11.00 (old K)

SUPER STOCK GT
Class Weight Break Index
GT/FSA 8-8.49 10.00 (GT/A)
GT/FSB 8.5-8.99 10.10 (B)
GT/FSC 9-9.49 10.20 (C)
GT/FSD 9.50-9.99 10.35 (D)
GT/FSE 10-10.49 10.50 (E)
GT/FSF 10.5-10.99 10.60 (F)
GT/FSG 11-11.49 10.75 (G)
GT/FSH 11.5-11.99 10.85 (H)
GT/FSI 12-12.49 10.95 (I)
GT/FSJ 12.5 or more 11.05 (J)

New Classes all use the stick Index; sticks and autos are combined in the new Classes. The corresponding stick Indexes are the same, new class vs old.