I thought that after 1980 - or somewhere like that - all 911 engines came with sodium filled exhaust valves - from BA's book...
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Current Whip: - 2003 996 Twin Turbo - 39K miles - Lapis Blue/Grey
Past: 1974 IROC (3.6) , 1987 Cabriolet (3.4) , 1990 C2 Targa, 1989 S2
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