I was reading the Warren Haynes interview on the SD site. He mentioned having Alnico II Pro Mini-Humbuckers in his Firebirds. I've never seen such a pickup on the site. Are these Custom Shop pups?
Are you sure it's not a misprint? Antiquity firebird pickups are in the Antiquity II line. He could have a standard Antiquity Firebird pickup in there. It could refer to the Antiquity II line.
"My 1964 Firebird III has an Alnico II Pro Mini-Humbucker in the neck, and my 1997 tobacco sunburst Firebird has an Alnico II Pro Mini-Humbucker in the bridge."