Deciding to add gauges is the easy part. Picking which ones to add can also be pretty easy. However, deciding where and how to mount them can sometimes be a bit tricky. Auto Meter can help you solve that problem, though. Their gauge pods come in several styles, with configurations to handle varying numbers of gauges. The result is that you'll have plenty of possibilities from which to choose.
AEM's Wideband UEGO Controllers are now available in gauges that include a single-channel analog output with a Bosch O2 sensor in one unit! These air/fuel ratio gauges feature an LED readout and sweeping LED "needle" that changes colors as AFR changes from rich to lean. The 52mm (2 1/16 in.) gauge housing fits in most gauge pods, and they can be remotely mounted virtually anywhere.