Heat the Broth: Bring the 6 cups of chicken stock to a boil in a large pot.
Slice the Pork Belly: While the stock heats, slice the cooked pork belly lengthwise into 1/8-inch-thick slices.
Crisp the Pork Belly: Place the pork belly slices in a skillet over medium heat. Fry for about 5 minutes, turning as needed, until the edges become crisp. Transfer the pork belly to paper towels to drain. Cook the Noodles: Add the ramen noodles to the boiling chicken stock and cook for 1 minute.If using dried ramen noodles, cook them longer as needed according to their preparation requirements. Add Bok Choy: After the noodles have cooked for 1 minute, add the thinly sliced baby bok choy and grated ginger. Bring the broth back to a boil and continue cooking for 1 minute. Season the Broth: Remove the pot from the heat. Stir in the soy sauce and toasted sesame oil until evenly incorporated.
Assemble the Bowls: Divide the ramen evenly among 4 bowls. Arrange two egg halves in each bowl, then add one-quarter of the crisped pork belly to each serving. Finish the Ramen: Add sriracha, chopped green onions, fresh cilantro, and Thai basil according to taste. Serve immediately.