Open Top — 2 museum-grade prints that set the mood. The Triumph TR6 was produced from 1969 to 1976 with Karmann restyling of the front and rear on Michelotti's TR4/TR5 basis. The 2. The Austin-Healey 3000 was produced from 1959 to 1967 in Mk I, II, and III forms. The 2.