Garmin G5
grabcad
Here are two models of the same device. It does both PFD and HSI. One model has the PFD graphics, and the other has the HSI. This is a very compact device that is probably excellent for light experimental aircraft. Ensure you have 4 inches or more behind the panel face, to give room for the backup battery and the pitot and static air connections.
Download Model from grabcad
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