Heat the oven to 350 and grease a 10-inch bundt pan really good - you don't want it to get stuck in there. In a bowl of a stand mixer beat the sugar and oil until well combined. Add the eggs and beat well. In a separate bowl, whisk together the flour, baking soda, salt and all the spices. Add the pumpkin and dry ingredients to the egg and oil mixture, ALTERNATING with pumpkin and dry ingredients, mixing on low speed after each addition until each is well incorporated. Spread the batter into the greased bundt pan and bake for about an hour. When you remove from the oven, cool in the pan for about 15 minutes before transferring to a wire rack. and then cool completely.

Combine the butter, cream, espresson powder, brown sugar, corn syrup, cocoa, and salt in a small saucepan over medium heat and bring to a simmer. Simmer on low, stirring, for 3 to 5 more minutes after everything has melted, then remove from heat and stir in espresso morsels and chocolate. Stir in vanilla.