Some newer Nissans are fitted with electronic speedometer, which uses a signal sender bolted to the gearbox (instead of the cable drive).
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Signal Sender
The A14/A15 60-series gearbox can take an electronic sender for electronic speedometer, you can unbolt the cable drive and bolt in sender from S13 or R31 71C gearbox.
Cable drive | electronic sender
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Adapter Sender
Discussion: POST Interesting blog from japan ,late R32gts-t FS5W71C behind an a-series...
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Speedometer
Auto Meter sells various sizes and styles of electronic speedometers.
Some guys fit an entire S13 cluster into the dash. See Custom_Dash#Silvia
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