Kinnunen won the Nordic Challenge Cup in 1969, the Interserie from 1971–1973, and helped Porsche to take the World Sportscar Championship for manufacturers in 1970 (drivers championships were not awarded until 1981).
Kinnunen gañou a Nordic Challenge Cup en 1969, a Interserie de 1971-1973 e axudou a Porsche a lograr o World Sportscar Championship para os fabricantes en 1970 (os campionatos de pilotos non foron galardoados ata 1981).