Porsche factory tech bulletins issued to dealers during this period; covers 911, 911 Carrera, 911 Turbo, 924, 924 Turbo, 928, 928S, 944, 944 Turbo, 911SC, and 912,
You can specify the type of files you want, for your device.Porsche Technical Bulletins (November 1984--December 1985, Service Information) | Porsche. A good, fresh read, highly recommended.