In addition to the crank pully, you will also need the water pump additional pulley too. Keep in mind that early harmonic balancers are more shallow, and later models (post 1975?) have thicker ones, this can mees with your P/S and AC belt alignment. (Like you needed more to deal with eh?) I've been there.
That AC bracket I first posted in the pic is what my dealer of the AC unit supplied to me and it totally did not work. It completely blocked the water outlet, and was unusable. I just wish I had the $85 for the Old Air bracket. I have one on my engine now that is home made.
