FYI, I was searching for a boost gauge to 3 bar (45psi) in anticpation of changing the compressor wheel in my stock turbo from the stock wheel to the Diesel Site Gen 2 Wicked Wheel (as posted by Chunder).

I found this gauge which nearly seems to be designed for the 7.3TD - 70mm boost, EGT, & oil temp in one gauge:

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