These alternator brackets were used on the late 1964 trucks with 292's
Part number are Best I can make out from parts book
C3TZ-10145-D superseded to D0HC-10145-d
C3TZ10156-A
C3TZ-10A313-A
Green Sales has 3 of the front brackets, 2 of side brackets and none of the adjuster bracket.
This is what the brackets look like