Conversation so far:
what was Chris Amon's legacy?
Chris Amon won eight non-championship GPs, the Silverstone International Trophy, the 1000 km Monza, the Daytona 24 Hours, the Tasman Series and, the 24 Heures du Mans.
did Chris Amon win any other titles?

Question: what was most significant?
Self-contained rewrite: what was the most significant title Chris Amon won?