The diesel is more than 25years old, it does not even have to test. AZ is one of the easiest state for inspections (although ur moving to Maricopa county rules may differ compared to Pima).
I would actually be more concerned by the 560SEL, that one may fail if you have not keep up with pesky vacuum emission control.

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Aquilae non capunt muscas! (Eagles don't hunt flies!)


1979 300SD Black/Black MBtex239000mi
1983 300TD euro-NA. White/Olive Cloth-MBtex 201000mi. Fleet car of the USA embassy in Morocco
1983 240D Labrador Blue/Blue MBtex 161000mi