I just placed an order for an after market HUD that looks like it will work on almost any vehicle.
Company selling is Exotic Vette
Broken or NO Heads Up Display in your Vette?!
Plugs into OBD2 port
Cost is around 110 after taxes and shipping
here are some of the features
Distance travelled on current trip
Bar graph of RPMS as well as numerical display of RPMS
Self dimming with ambient light sensor means no messing with brightness
On/Off with the ignition
Scans computer for Check Engine Light codes as well as allows you to reset them
Allows for adjustable alerts on low voltage, high temp, overspeed
Allows adjustment of wheel/tire size so you can get accurate speed display with any tire size (very nice feature)
Comes with a wireless remote you can mount on your console or dash, or keep in your glove box, to change features and adjustments
I should receive soon and will let you know what I think.