 Nyorai mberi kweiyi ndima - Pashure pokupora kubva mukukuvadzwa kwake, Duman akakwanirisa nokuda kwomujaho wa1965muTravelon Trailer Special. Akasvika pakakwirira se12th asati adonha. Mumakwikwi a1966, akatanga ari wekupedzisira 33rd uye akabatanidzwa mukuparara kwekutanga kwekutanga, achipedzisa. Mumakwikwi a1967, akapedza ari wechi23 achityaira REV 500 Special yaJ. C. Agajanian. 