According to the catalog at ********.com the Caprice and the Roadmaster for 95-96 use the same steering box.

I could not find out if they use the same Pitmam arm.

Suggest to him that he take a look at the steering box and the Pitman arm and see if the box is the same and the arm can be changed out. I have yet to see one that could not but I have not seen everything.

Part numbers on the steering box might not help since the cop box is different from all the others.