Jeff,
I registered my 240 in Arizona (northwest Phoenix) from out of State in 2008 (up until the current day) and just required an initial cursory visual inspection (lights, horn, etc.) by the Arizona MVD. In fact the inspector just walked around the car with his clipboard checking boxes and nodding - I didn't even have to open the hood. No smog test was (or has ever been) required, provided you are able to produce proof of vintage/collector vehicle insurance. See this article for more information https://tucson.com/news/local/govt-and-politics/got-collector-car-insurance-smog-test-no-longer-needed/article_b1903320-9fcd-5e1b-b56f-ccaafa538bf6.html
Hope this helps. Just remember... it's a dry heat...