Porsche Motorsport and Manthey Racing were out in Monza last weekend, testing a couple of Cayman GT4 (plus a 911GT3CupMR and a test mule apparently based on the GT3 Cup), judging by the engine sound #4 powerplant should have been turbocharged. Same car featured a different wing, attached on the upper surface and modified front bumper, with a deeper central lips, larger side intakes with outlets located just on the wheelarch edge
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