Prepare the noodles according to package directions, and divide them between 6 serving bowls. Top with slaw mix and onion.While the noodles are cooking, combine the chicken broth, fish sauce, and soy sauce in a saucepan and bring to a boil over medium-high heat. Reduce the heat to very low, to keep the broth just below a simmer.
Heat the oil in a very large skillet over medium-high heat.
Add the pork and cook until browned and cooked to 145°F, 1 to 2 minutes per side (you may have to do this in batches).
Let stand at room temperature for three minutes. Arrange the pork on top of the noodle bowls.Ladle in piping-hot broth, garnish with basil and lime wedges, and serve.