Details Rocker arm:
Rocker arm support can be GM style 3100 and 3400 models along with Buick and others.
Picture below is of the Olds Alero V6 rocker arm bolt and support.
The insert must be below the notched portion of the support.
so our standard repair kit for the M8x1.25 will not work.
The special 4 flute core drill included will cut through the notched
area without difficultly. A standard 2 flute drill would hang on the sides
