Preheat the oven to 375 degrees. Prepare pans. You'll need 2 loaf pans or 8 mini-loaf pans. In one bowl, beat sugar and oil. Add in pumpkin and eggs. In another bowl, stir all dry ingredients except chocolate chips. Stir the pumpkin mixture into the dry mixture in two separate additions. Mix in chocolate chips. Divide batter equally between pans. Bake until toothpick tester comes out clean. This takes a little over an hour with the large loaves and a little over 30 minutes with mini-loaves. Turn loaves onto racks to cool completely.
To freeze: Wrap cooled loaves tightly in plastic wrap, then wrap in aluminum foil.