Go to your favorite Internet Parts Store and look up the Hardware kit for the Calipers. They will have bendix and ATE (TEVIS, or TEVES) and the The Bendix kit will be differen from the ATE kit will be different just as vstech said.

On the W123 I don't remember there being any difference in the Brake Hoses meaning yo can use the Hoses on either make of Caliper.

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84 300D, 82 Volvo 244Gl Diesel