does a 1978 firebird formula have a tach as a standard option?
Yes. On the left side of the dash like the other Pontiacs.
From the pic below, the tach can be seen on the left hand side (red line shown was a dead give away)...I highly doubt the "We Build Excitement" folks would make something a crucial as a tachometer, an "optional accessory"...Hopefully NO company would ever do THAT!!
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