That post was in the Roaring Forties factory support forum. It was posted under the subject "Front cover and dress for serpentine" about a month ago.
Pauls explanation of the reverse direction water pump made sense to me so I'll leave that one for now except to add that I think the Gallery section of the Roaring Forties web site
www.roaringforties.com.au has pictures of the engines with V-belt and serpentine setups.
John