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SLAP dB Classes
Stock
1-161 Square Inches
161-260 Square Inches
261-360 Square Inches
Pro Stock
1-360 Square Inches
Super Stock
1-260 Square Inches
261-360 Square Inches
361-720 Square Inches
Modified
1-360 Square Inches
361+ Square Inches
Ultimate
Open
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dB Drag Classes
Mini Street
1-2 Subs
3-4 Subs
Street
1-2 Subs
3-4 Subs
Super Street
1-2 Subs (No Wall)
1-2 Subs
3-4 Subs
5+ Subs
Extreme
Open
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