Audi was not terribly successful at rally, Lancia's main rival during the Group B days was Peugeot with the 205s, and it turns out that the whole Group B era was a constant battle between Peugeot and Lancia.
Not sure if you didn't notice (If you sure did if you are an Alfa person) but this is inspired to the Tipo 33 Stradale aka the most beautiful thing in the universe.