Yellow Fever - KO Netsu - This 1990 Sportster started out as just a throw together quick hardtail conversion (Bitter End Weld-On tail section) to give some new life to an old bike taking up too much room at the shop. Harley engine and tranny were kept, but stock front end was replaced by a Springer. Brass and steel were twisted (notice the handlebars and the rear fender brace/sissy bar), a seat pan, oil tank, battery and electric boxes and a lot of little parts were fabricated. Copper…