Contact Phill Brander in Australia, who often posts on this site. Cal Fuller is long retired in New Jersey, still has a few unused woodie A-class boats and parts. There are several on the A-class website too, usually for sale for $2500 or less. My Cal Fuller Catnip is shown on my website-
www.fastsail.com/catcobbler Fuller won the A-class North Americans with this boat in 1982 and 1983. It is still totally sound, having been built of 1/8 inch marine plywood and epoxy with aluminum parts. I bought it with both hulls holed after a tornado blew thru the Miami Yacht Club. About 10 new sailors sailed it lately, and 4 then bought A-cats. Caveat: some old boats were made of 1/8 inch non-marine door skins. They DID NOT LAST.