Just some more details about the truck. Maybe this could help to find somebody who could help me.
The truck was built/restored by Dave Chapman (The Hollister Road Company) in 2014. Dave passed away in 2018 and the previous owner didn´t know technical details. Maybe the company that modified the gauge is "Classic Gauge and Cluster" (on Facebook) ..but they did not reply on my question...
Sven
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Last edited by Sven010; 07/29/2021 4:35 AM.

1947 Chevrolet 3800 1-ton long bed
292 cui, GM 14 bolt rear-end, 4 x disc brakes
In Frankfurt, Germany
Pictures in the Forum Gallery