In CanAm, Porsche cooperated with Penske, while in Deutsche Rennsportmeisterschaft, customers like Kremer Racing, Georg Loos and Joest Racing enjoyed various degrees of factory support.
Na CanAm, Porsche cooperou con Penske, mentres que na Deutsche Rennsportmeisterschaft, clientes como Kremer Racing, Georg Loos e Joest Racing gozaron de diversos graos de apoio de fábrica.