Boost gauge idea?

So I replaced my Symphony with a new head unit and I love it. But now the top of the digital in dash display is empty. Is there any way to send a boost gauge signal to the digital display in place of the radio signal? I don't like the look of the steering column pod, the vent gauge or the a pillar mount and looking for something different.



Would the refesh rate be fast enough to be worth doing?



Thoughts?