I installed a set of Dakota single guages in a friends Duramax and they were nice, but pricey. They had a green backlighting and I personally found them a little hard to read in bright sunlight. If you want to spend some big bucks, look at SPA guages, they come in single and double guages, but the prices start around $300 each, the pyro/boost guage was $450. Hope that helps.