70's era gauges

If that were mine, and only my opinion, there is only one answer.........the old black face SW guages.

I agree, SW was the industry standard since the beginnings of the automobile.
They had a no nonsense utilitarian reputation and could be found in everything from bulldozers to airplanes.
Sadly they did eventually get one upped by autometer in racing.
I still really like the old Stewart Warner's and would look great in a truck that age.
If you can find them they likely will still work, the mechanical one's anyway.