Preheat oven to 350°F. Grease and flour bottom only of one 9"x5" or two 8"x4" loaf pans.
In large bowl, combine sugar and margarine; beat until light and fluffy.
Add bananas, sour cream and eggs; blend well.
Stir in flour, baking soda and salt; blend well.
Fold in chocolate chips and nuts. Pour into pan.
Bake at 350° for 55-65 minutes or until toothpick comes out clean.
Cool 15 minutes; remove from pan. Cool completely.
