Edit - no longer needed. I made my own out of thin galvanised sheet metal.
Looking for one of these plastic covers for the underside of the gear lever extension housing on my 1800ES for a reasonable price (the car hasn't had one since before I bought it in 1990 so I can live without it if it's more than $20!)
I'm located about an hour west of Melbourne but could arrange to pick up in Melbourne. Thanks in advance!