Auto Meter 8304 Chevy Factory Match Mechanical Boost Gauge 2.3125 in.

these gauges are not cheap by any means, but they are worth every dollar. I had glow shift for a while, key word HAD. I kept getting in accurate reading on glowshift was saying 15psi when it was half of that and egt temp was all over the place. I got tired of dealing with their crappy warranty so I went with a name I could trust. Auto meter is still made in the states and have great quality. Gauges work as one would expect and were not terrible to install. Only thing that i would change if i was them would be make the needles more orange to match the stock needles better, although i have new old stock needles so they are brand new and not faded like they all do. great gauge would buy again if i had another truck to put them in.