Like Mike, above, I use Autometer gauges, so far Tach, Water temp, and Oil Pressure. I have them mounted directly in front of the stock panel, pretty much right up against the clear plastic cover of the stock gauges. I have simply drilled holes through the foam of the bottom part of the dash, and mounted the gauges with strong plastic snap-ties. Works great, and no trouble seeing the gauges. We need to leave the stock gauge panel in place in our class, but there is nothing in the rules saying I have to see the panel...I don't need the warning buzzers, as I don't think I'd even hear them. I have got into the habit of checking the gauges several times a lap