GT1 Porsche 992
#33730 from Grand Touring Committee · Rule change · TB 23-02 (2023-02 Fastrack)
In GT1-ST Spec Lines, Cars - Porsche, classify Porsche 992 GT3 Cup Car as follows:
GT1-ST Maximum
Displacement
Minimum
Weight Restrictor Notes
Porsche 992 GT3 Cup 3997 2950 Car must be prepared in accordance with
the appropriate model/year Porsche 992
factory service manual. Factory (OEM
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manufactured) Lexan front windows
allowed as delivered. ABS permitted.