Notes
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Thick exhaust flanges, and with oxygen sensor hole. Exhaust collector tubing is 38 mm O.D. Also use (Qty.) (1) 911 107 729 10 oil line, (1) 911 107 739 10 oil pipe. Requires model year 1974 dual inlet muffler. Thick exhaust flanges, and with oxygen sensor hole. Exhaust collector tubing is 35 mm I.D. Also use (Qty.) (1) 911 107 729 10 oil line, (1) 911 107 739 10 oil pipe. Requires model year 1974 dual inlet muffler.
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