In saucepan, heat vinegar and sugar until sugar dissolves, let stand to cool completely. Cook pasta according to package directions; rinse well, drain and set aside. When sugar/vinegar solution has cooled, add oil, mustard, salt and garlic powder and blend thoroughly with whisk. Add rest of ingredients to cooled pasta. Pour dressing over top and toss well. Refrigerate overnight or for at least 6 hours for best flavor.
Notes
You can use corkscrew pasta or any of your choice.