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I don't know if this will fit well here, and I haven't been able to find a good thread to ask about this in. But I have a technical question about the GTE cars. Since 2016, the front and rear diffusers on them have become less regulated. But I'm wondering what determines the size of them.
They're certainly not spec parts, and I know what's done up front is limited by packaging compared to LMP cars, but the rear diffusers are very different from car to car. But what determines the size and shape per the technical regs?
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