Nice work Andrew,
I am following as I have an LS1 project going on and trying to work out the best option.
If you do make these or a kit I would like to know more, have been to the Speedhut website since reading your post and I like their gauges and would probably go for a digital speedo with indicator and hi-beam lights, tacho and quad gauge.
Have to wait and see how my first instrument experiment goes using the VZ Commodore dash though
Hope your progress is eas, good luck