Model coverage911 SC Coupe911 SC Targa911 SC Cabriolet. Engine coverage3.0 liter, air cooled, 6 cylinder horizontally opposed (930/04, 930/07 and 930/16). Transmission coverage915 (5-speed, with cable-operated clutch). These companion manuals cover over a decade of Porsche 911 production. Although the body shell and engine in these cars remain similar, many gradual changes took place over the years, which these manuals cover in detail.Porsche 911 Sc Service Manual Coupe, Targa, and Cabriolet 1978, 1979, 1980, 1981, 1982, 1983, with ISBN 9780837602905 and ISBN 0837602904.