cutting back of dash

Hey @TrailBeast, any chance you have pics of the back of your cluster?

No I sure don't, sorry.
A can tell you though that I mototooled out the entire drivers side of the metal back and circuit board both to put the aftermarket mechanical gauges in the three OEM holes in the face.
The sender/sensor and mounting studs hit the metal back otherwise.
Then I used the remains of the traces to solder to for the gauge wiring and the volt meter so everything still ran off the big socket connector.

I cut out the red lined area then used the green dotted tracks for the new internal lighting and volt meter for the new gauges.
The temp and oil pressure are mechanical so they had the lines that run to the motor instead of using electric.

backside.jpg