AFR Gauges

I have the aem in my truck, and an innovate dual in my boat. Both have worked fantastic. Make sure whatever you buy comes with Bosch sensors.

https://www.aemelectronics.com/prod...ideband_gauges/classic_wideband/parts/30-4110

https://www.innovatemotorsports.com/dlg-1-dual-lambda-afr-gauge-kit.html