Don't forget the GTEs have a LM-specific aero package already
Also - GT3 rules are FIA, not SRO - SRO have the most widely-adopted BoP structure but do not define the rules
GT4 is different - that is owned by SRO - if you all a class GT4 then you have to have an SRO license - that's why several championships don't call it GT4!
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