Porsche 1972 911 Workshop Manual page 735

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From 1977 models on (adjustable spring strut setting) the shoulder bolts of side rnember/rear axle cross tube
are
4
For these cars the bores in the take-ups of the attachment set must be enlarged by this amount. For the
previous models these enlarged holes must be adapted by using suitable washers.
Attachment set ENS 11.360 corresponds with version from 1977 models on. For cars up to 1976 models
the supplied washers must be used.
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