chicken Pasta Salad

from Sheri McMurtrey's neighbor

BEWARE...THIS MAKES A TON

9 cups chicken (boiled and cut up)
2 small boxes macaroni small shells, cooked
8 cups celery diced
8 cups red grapes, halved

SAUCE INGREDIENTS
1 qt mayo
2 cups sour cream
1/4 cup lemon juice
1/4 cup sugar, plus a little more
1-1/2 t. salt
2 cups cashew pieces

Mix sauce ingredients and then toss with the first 4 ingredients and refrigerate.
Add 2 cups cashew pieces right before serving or serve on the side for those with allergies.