My Cleveland powered zed has a VS V8 Alternator that wires up to the stock loom. If you drill the L Series bracket all the way through and trim it a little it fits. You'll need the wiring loom from the VS which i bought new for $12 and also you'll have to change over the pulley and get the right sized fan belt. 80 amp alternator or you can get the 120 amp birdcage alternator.
http://www.ebay.com.au/itm/Brand-Bew-Holden-Calais-Commodore-VS-V8-alternator-12V-120A-/271210994602?pt=AU_Car_Parts_Accessories&hash=item3f256f5baa&_uhb=1
My other zed has a holden 80 amp alternator that had to have a diode installed.