[FireSale]

From the revision that has been discussed here:

SECTION 11A: SUPER STOCK, DESIGNATIONS (Page 11) (1/28/2016)
DESIGNATIONS (For 2016 season)
FGT/A, FGT/B, FGT/C, FGT/D, FGT/E, FGT/F, FGT/G, FGT/H, FGT/I, FGT/J, GT/A, GT/B, GT/C, GT/D, GT/E, GT/F, GT/G, GT/H, GT/I, GT/J, GT/K, GT/L, and GT/M, preceded by car number (manual transmission). GT/AA, GT/BA, GT/CA, GT/DA, GT/EA, GT/FA, GT/GA, GT/HA, GT/IA, GT/JA, GT/KA, GT/LA, and GT/MA, preceded by car number (automatic transmission).

DESIGNATIONS (For 2017 season)
FGT/A, FGT/B, FGT/C, FGT/D, FGT/E, FGT/F, FGT/G, FGT/H, FGT/I, FGT/J, FGT/K, FGT/L, FGT/M, FGT/N, GT/A, GT/B, GT/C, GT/D, GT/E, GT/F, GT/G, GT/H, GT/I, GT/J, GT/K, GT/L, GT/M, GT/N, GT/O, GT/P and GT/Q, preceded by car number (manual transmission). GT/AA, GT/BA, GT/CA, GT/DA, GT/EA, GT/FA, GT/GA, GT/HA, GT/IA, GT/JA, GT/KA, GT/LA, GT/MA, GT/NA, GT/OA GT/PA and GT/QA, preceded by car number (automatic transmission).
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From the originally published 2016 rule book:

SECTION 11A - SUPER STOCK, DESIGNATIONS
FSS/A, FSS/B, FSS/C, FSS/D, FSS/E, FSS/F, FSS/G, FSS/H, FSS/I,
FSS/J, FSS/K, FSS/L, FSS/M, SS/AH, SS/A, SS/B, SS/C, SS/D,
SS/E, SS/F, SS/G, SS/H, SS/I, SS/J, SS/K, SS/L, SS/M, SS/N,
SS/O, and SS/P preceded by car number (manual transmission).
SS/AA, SS/BA, SS/CA, SS/DA, SS/EA, SS/FA, SS/GA, SS/HA,
SS/IA, SS/JA, SS/KA, SS/LA, SS/MA, SS/NA, SS/OA, and SS/PA
preceded by car number (automatic transmission).

SECTION 11B -SUPER STOCK/GT
Requirements and specifications for GT classes
are the same as those for Super Stock classes -
Section 11A - with the following exceptions:

DESIGNATIONS
FGT/A, FGT/B, FGT/C, FGT/D, FGT/E, FGT/F, FGT/G, FGT/H,
FGT/I, FGT/J, GT/A, GT/B, GT/C, GT/D, GT/E, GT/F, GT/G,
GT/H, GT/I, GT/J, GT/K, GT/L, and GT/M, preceded by car
number (manual transmission). GT/AA, GT/BA, GT/CA, GT/DA,
GT/EA, GT/FA, GT/GA, GT/HA, GT/IA, GT/JA, GT/KA, GT/LA,
and GT/MA, preceded by car number (automatic transmission).

It looks to me like SS and GT are going to be merged under the designation GT. The new revision is titled Super Stock 11a, but all the classes listed are designated GT. The text makes reference to GT only and includes the "year optional" for the engine, so maybe an error in the section title?

Dale