What do you need measured? I can measure whatever you need on a W123.

As for shipping- break up the components if you can and do the luggage deal. I’ve done it before and the lesson I learned is go to Italy’s version of Goodwill and buy junkie luggage to toss when you get home. Make sure to drain all fluids or it will be impounded, especially if it leaks.

In the U.S. I added a printed note to the TSA inspector advising what the part is

Steamboatsykes is in Italy now as an expat