Well. . they are not cheap but I really like my SPA dual gauges.
My EGT/Boost gauge also functions as a cool down timer with its programmable external output.
· Selectable backlight color (red or green)
· Adjustable backlight brightness
· Black or white dials
· Standard Black or Chrome option bezels
· High resolution modes for 0. 1 PSI, Deg C etc
· Programmable button function, recall menu etc
· Splash proof sensor connections
· Extended temperature operation (for extreme climates) -20 to +70 Deg C
· Stainless steel pressure and vacuum sensors
· Programmable warning lights, low battery, averaging etc
· Programmable outputs for driving external LED's or relays
· Thermocouple options and kits available
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You can find more on those
here
They just added one that will do rail pressure & oil pressure.