Where’d you put an A/M tach on an early A-body?

magnetic base?
If a streeter, forget the tach. Just get a standalone shiftlight and a rev-limiter. After the novelty of having a tach wears off, you will hardly ever look at it again.Especially the small short sweeps; the resolution is way too small, and the sweep is too slow. But you can sorta read your cruise rpm.