Remember that this is a very old thread, 2012! I have to see if my old computer still works. I had all that information on that computer.
The system that Gill rigged up was a series of lights that would come on as the car was shifted through the gears. Seriously outdated in this day and age!
USLC has a digital gear indicator available. I think the cost around $250 or so. I have seen some used ones on some of the Facebook pages. DanH designed a really cool system that tested out as very accurate and very strong compared to USLC's parts. He hasn't been around the site in years. Not sure if I can still get in contact with him or not.
Steve