Your a little confused on how MB does models. Except for early turbo diesel models that were made for the US the norm was for MB to chose a small portion of all modles made to make US modles of. That means that if you see a US model (except turbodiesels) there is a comparable euro model. The same can not be said in reverse. MB only brought in the expensive versions of each chassis they brought in.

It also could have been a 73 450SEL as they had short bumpers then on US models.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician