1966 Steve - as per my post above, I name all pics by date taken as far as I can. Dating some of them is proving to be a major mission, but I keep chipping away. Often, correctly dating just one pic can confirm the dates of others based on location and even clues such as the state of the foliage in the background or the condition of the track. Programme collectors are often a useful source of info too but so far, some of the marque clubs have been less useful than you'd think.
Chaparral was 1988, when I made a fleeting visit to the UK. Sorry, I have no other details.