N/A Guage Question

Hey I was just wondering what the two best guages to get for a naturally aspirated car would be. So far I am thinking about oil pressure, but im not sure on the other. Also how do you read these guages like oil pressure and so on to make sure your car is running correctly? Thanks!

you may want to get oil temp as well if you dont already have that one. Stay away from the air/fuel gauge. Its nothing but a pretty lights display that bounces back and forth. If you have the money for a wideband get that. I think they start around $350. If you dont have the money for that, than an egt is another solution.

a vacuum gauge, properly read, is a very accurate way to determend engine load and engine health. in fact, i beleave some early fuel economy gauges were just vacuum gauges