I bought some Glowshift gauges for my 442. 10 color LED lit, and they can daisy chain power.
https://www.youtube.com/watch?v=y7X9M...eature=related
https://www.youtube.com/watch?v=ZLbMAil-nc8
These can beep and flash when you go past your high and low warnings you program.
I already had Autometer Cobalts for my Z28.