I don't have letter bits, just number. Had to look up the letter sizes to convert to number. But I do have the taps, so it worked out just fine.
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1998 Firebird Coupe
Mods: 3.73 Gears, Eaton TrueTrac, PCM Tune, LS1 Aluminum Drive Shaft, Cold Air Intake, 180 Thermostat, Magnaflow Cat-Back Exhaust, Moog LCA busings.
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