OK guys, now that these are very close to production, here are some of the finalized technical details.
I will offer it in 2 different "packages":
Package 1 will be a self-contained unit inside a standard gauge housing. It will be enclosed all as one unit with an LED display and an "up" and "down" button on the front of the gauge face. This will fit anywhere a standard 2 1/16" will fit, in an overhead mount, pillar mount, etc.
Package 2 will be a "builders kit" or "DIY kit". There will be a small box that will mount under the dash, and the LED display and "up" and "down" buttons will be separate so you can mount them in custom locations anywhere in the dash.
The valet switch will be available as an added-cost option with either package. If you option for the valet switch it will include the tamper-proof valet programming in the module, as well as several feet of extra wiring and a toggle switch that you can mount in a secret location.
If you want an auxiliary input/external trigger that will force it to go to a certain tune (IE for nitrous, launch control, etc) that will be available as an added-cost option.
With either package you have a choice of three display colors, red, green, and blue. When you order it, just specify what color you want.
All of the necessary wiring, including the ECM pin, is included with both packages. All you have to do is hook up ignition-hot power, ground, and the ECM pin. (specify LB7/LLY/LBZ/LMM when ordering)
Ben