Switch Gauges

I own a 1991 Lumina 3.1, and my gauge is a joke. its got a Speedometer, and lights to tell me if somethings wrong. I want to switch it out with one I found that has Oil Pressure, Water Temp, Fuel, Speedometer, and Tach. I need to know exactly what i need. I heard I need to install sensers onto the motor?

Yeah, I'd imagine you'd be able to go to a junkyard and find the guage package you want. And yes, you'll have to swap oil pressure and temperature senders on the engine.