Kevinski, If you compare the measurements of the center hub hole and brake shoe surface on your drum, it matches those I gave above for Bendix drums. That drum (and any other with the same measurements) are for the later Bendix style brakes. I could not cross reference the cast part number shown in the picture, but that could be a GM of Canada number which may not necessarily match US GM numbers.
Hope this may help clear up the part ID.
