To be honest,I don't know.I had it bolted to my big block water pump.I used the two holes in the pump that your factory style alternator bracket bolts to.I had it on a 350 for a while too,using the same bolt holes on the water pump.
A guy on another site I have it advertised on is supposed to buy it,I'm waiting on his PayPal payment.I'll let you know if it sells.
Thanks,Mark
here's a pic,not the best angle,but you can see the bracket in the pic
