Grandma Lowe's Shrimp Macaroni Salad

This is a recipe from Grandma Lowe and this is what she said about it: "I've tasted this recipe and loved it. I think the secret is the French Dressing."

Shrimp Macaroni Salad:
1 cup uncooked salad-roni (cook and cool)
1 cup chopped celery
1 medium onion, chopped
2 hard boiled eggs, chopped
1/4 cup green pepper, chopped
1/4 cup pimento, chopped
1 can small shrimp

Dressing:
1 cup mayonnaise with 1/4 cup French Dressing