Cut the bok choy in half lengthwise, rinse and pat dry. Slice the bok choy halves crosswise into 1-inch wide ribbons; remove the core and slice crosswise into ¼-inch pieces. Transfer the bok choy to a large bowl. Toss the bok choy and scallions with the oils, vinegar, honey, tamari and orange juice. Add the toasted ramen, almonds and sunflower seeds and toss again just before serving.