In a blender, blend 10 oz pkg Fritos (minus 1 1/2 cups) until it resembles corn meal.
Mix together:
1 sm can enchilada sauce
1 sm can tomato sauce
Chili
Ground Fritos
Place mixture in 9x13 pan.
On top of chili mixture, layer:
Sour cream
Cheddar cheese
Sprinkle 1 1/2 cup of reserved Fritos, lightly crunched up
Bake until warmed thoroughly and is bubbly.