To get it to work on an Escos you will need to find a speed signal from somewhere - possibly the ABS sensors. Then it is just a case of getting an electronics genius to make a chip that converts the Escos input signals for speed and RPM into the relevant Corvette equivalent signals to be output to the unit.

I'm sure it is something that anyone like SImon at SECS could do given enough time to research what signals are required for the HUD unit. I'm guessing they woulld have to dismantle a working Corvette to figure it out though!