If you have a trusted independent Tech, ask him/her who they use for alignments on the Benz's they do front end work on. My local Tech uses a small alignment shop here in town who has a alignment tech versed in the older Benz's.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.