After Vittorio Ghidella (Fiat CEO) accepted the design, Centro Stile Alfa Romeo under Walter de Silva was responsible for the completion of the detail work and also for the design of the interiors, as Pininfarina's proposal was not accepted.
Setelah Vittorio Ghidella (CEO Fiat) menerima desain, Centro Stile Alfa Romeo di bawah Walter de Silva bertanggung jawab atas penyelesaian pekerjaan detail dan juga untuk desain interior, karena proposal Pininfarina tidak diterima.