I agree with junkie autometer all the way. I'm in your same boat. I want on in the car. Autometer has a couple. I'm looking at the ultra-lite's. You can spend $90 for a 1/4 sweep or $200 for a full sweep. They both come with the sending unit. The problem I have seen is the 1/4 sweep gauge is so smalland movement is limited. I'm not sure if you will notice it move a couple of psi and that is why you need one. Check out autometers site. Thet have some ol pictures of there gauges.
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