No longer available directly from Honda. You might have to buy an old junk carb off Ebay and rob it for parts.
1970 CT70HK0 Candy Emerald Green (restored)
1972 CT70HK1 Candy Ruby Red (restored)
1974 CT70K3 Candy Topaz Orange (low mileage original)
1974 CT70K3 Candy Riviera Blue (restoration project-pending)