Raise My Computer Above My Arms

My position has my arms pretty close together. My computer does not fit between them. I have seen some people with a tower that brings the computer up above the arms. I assume they are mostly custom because I cannot find something like it anywhere.

Here is an example of what I am looking for, but the bottom of it is proprietary, and looks to only work with their bars. Is there something like this that exists with say a Garmin lock on the bottom? So I could twist it into my existing mount, then put the Garmin on the tower?

https://www.racewaredirect.co/shop/garmin-computer-raiser-for-tt-extensions/
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awesome this is what I was looking for, thank you!

I have an extra Raceware riser if you need one. Bought it but not quite high enough for my mount.