In large bowl, toss broccoli slaw, dry ramen noodles broken into small pieces, green onions, and sunflower seeds.
In small bowl, whisk sugar, canola oil, vinegar, and 3/4 of the ramen seasoning packet together. Pour over salad mix and toss again so all ingredients are evenly mixed. Refrigerate until cold.
For best results, make this salad about a day in advance of serving it to give the noodles a chance to soften just a bit.