The pics don't look wet as such but then if it was an hour it could have changed. Do any of these Corollas still exist? I've seen quite a few ex-works rally ones for sale recently.
Anyway, someone out there must know the date!!
Slightly O/T but this was the pneultimate Touring Car race Dad did, the last being in 1989 in an M3 but that's for another history thread one day!!