DB acquired a lot [ over 1000 ] of these. Do an internet search for ' sskm 49 ', and that will give you many sources of information, dimensions, on those in German service.
And since Klein Modellbahn produced a good [ so I've read ] model of these in HO, you can use perhaps that info as a basis to find out about other systems [ FS, SNCF ] that also may have acquired some.
Hope that helps,
SZ