Go to classic airboats, they have what you need. You will need a volt meter, oil pres, oil temp, and tack, maybe a hobbs meter. I like the mechanic gauges. Don't use the tiny tubing for the oil pressure, they have the thick wall rubber tubing and the fitting. For the oil temp you will need a lycoming fitting for the sensor, some times you have to drill out the hole for the sensor to pass through. You can also add the cly temp guage.