I had a similar idea a few years ago and never finished it.. Need to do the layout of the speedometer face and attach the needle.

Somewhere is a thread about it, but all the info is in the pictures.
https://photos.app.goo.gl/ymvcGhwf2G7W2FVXA
Basically trim the case shorter, remove and reinstall trip button on back of circuit board, make a sheet metal clamp bracket, enlarge back of original speedometer housing, make new center plate with window for odometer, new face plate decal, and adapter for needle.

Same can be done with a tachometer, VDO makes a comparable tach to start with.


•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-