Combine coleslaw mix, green onions, ramen noodles (set aside seasoning packet for the dressing), almonds, and sunflower nuts in a salad bowl. Chill, covered, until serving time, up to 1 hour.
For dressing: In a screw-top jar, combine oil, vinegar, sugar, pepper and seasoning from the package of noodles. Cover and shake. Chill until serving time.
Before serving, shake dressing; pour over salad and toss to coat. If you like, garnish salad with additional sliced green onion.