Hy Pat66, even though you yelled your question I will try and answer at least part of it. The "Switch, Directional Signal" group 2.895 is the same from 1964 through 1966 "exc 50 thru 960 diesels", the GM part number is 910853 "Lower bearing" are you asking about the bearing up in the turn signal switch area? I f so that is "Bearing, direction signal control switch" the same 1964 - 66 "Exc 50 thru 960 diesels" GM part number 5955201. At the moment I can not locate any good information on horn control parts, but I will keep trying. All this information came from a medium duty parts book and it has not been cross checked with a light duty parts book, hope the info helps some.
