Again, the GM HUD is quite specific. You need to remember that these units have a display capable of the following:
High Beam Symbol
"CHECK GAGES" Flag
Fuel Pump Symbol
The GM HUD (in the Bonneville) is not made up of pixels. Therefore, what'* above is what you get. It isn't configurable, the segments are "hard wired" as part of the fluorescent display. Several of these (particularly the entertainment items) are retrieved over the data bus, but are specific only to GM.
You may get portions to work, but I very much doubt that it will work as designed.
StingRay Bike w/cards in the spokes, Weeeeeee!