I'm looking at designing a new dash, one that is set back from the line of the scuttle. It's going to be recessed about 6" under the scuttle in the same way that the dash on the fury/phoenix is constructed. It will be secured to the firewall by an arbitrary number of standoffs made from tubing tapped at each end for the fixings.
The benefits of this are that it is a little more shielded from the elements and makes the ease of construction a little better. The shaded position will also improve the ability to actually read the displays. The dash rear will also be a convenient point to mount any future upgrades such as megasquirt.
The downside of having the dash recessed is that the switches on it at the moment will not be reachable by the driver. This is addressed by having no switches on the dash as they have all been relocated to the pod on the top of the tunnel. The dash will mainly consist of the various gauges, digital displays and lights I have already fitted. The construction of the new dash will enable the backplane wiring to be a lot tidier as well. I can run a 12V bus over the entire dash to satisfy each individual units power demands.
The entire dash assembly will connect to the rest of the loom using a ruggedised D type connector (as used in computer parallel ports)

The dash will incorporate:
* ZX9 dials
* Kingbright LED oil pressure lamp
* Brake warning lamp
* JAW display
* P900 holder
* Brake bias knob
* GDU
* Shiftlight

I have a small fusebox that could be easily adapted to run the 12V bus. The yellowbox, JAW, GDU and shiftlight are the only things that require a 12V supply (so far)

The dash rear will mount the JAW controller, shiftlight programming buttons, the yellowbox, and have enough room for megasquirt (when it arrives) The start pushbutton and ignition doom switch will be relocated to the tunnel top box (and it's separate loom). This in turn will be connected to the main loom by a similar D type connector. The carling rocker switches will be in a 6 gang configuration with the ignition, start and indicator rocker switch separate.

As for material, I shall initially construct the new dash from aluminium with a requisite curvature on the bottom (I could even modify the existing dash to fit). The ally former can be covered in the self adhesive CF sheet, or indeed by a full CF lamination process if required.