Macaroni

1 (16 ounce) package macaroni 4 eggs  1 cup mayonnaise ½ cup sour cream 1 teaspoon salt, or to taste ¼ teaspoon ground black pepper, or to taste ¼ teaspoon ground mustard 2 tablespoons sweet pickle juice 2 tablespoons celery seed 1 cup chopped celery ½ cup chopped red onion ½ cup pimento-stuffed …