Wingnut, you didn't say what kind of compressor you have. For that matter, what distributor do you have? The Oldair bracket that Thomas linked to, is for the Sanden. It uses two bolts in front of plug #1 and two bolts between plugs #2 and #3. I believe it requires a small point dist or the remote coil HEI as Thomas has pictured.
The bracket Thomas has pictured, looks like it is high enough to clear a coil-in-cap HEI. That bracket would need extra braces, solidly welded to it that extended back to the second set on bolt holes by plug #3.
The factory AC brackets for the A6 or the R4 compressors are HUGE. They bolt to the head, the motor mount bolts and the front of the block, forward and below the oil filter. It even requires a different lower radiator hose.
beltfed, you went over your pulley problem a month ago. Go to a junk yard. Find a '70s-early '80s, Olds, Buick, Pontiac or Chevy with straight six and AC. It should have the pulley. If your balancer is good and tight, don't worry about the crank bolt. Just use the three hub bolts.
You can't see it in this picture, but my homemade bracket extends back to the second set of holes by plug #3.
Chopper40 has a thread in the Electrical section with many pictures of his AC bracket. His is very clean and similar to the Oldair bracket.
My Sanden Mount on the 292