Place the chilled rice and pasta into a large mixing bowl. Stir in the red onion, currants, corn, yellow bell pepper, red bell pepper, green bell pepper, 2 tablespoons of basil, and salt.
In a separate bowl, whisk together the vinegar, honey, mustard, garlic powder, pepper, and additional fresh basil. Slowly whisk in the oil and whip it up until well blended.
Stir the dressing into the pasta.
Add salt and pepper to taste (you'll be adding at least 1 tablespoon of salt--be prepared)
Chill for at least 2 hours prior to serving (best if it chills overnight).