1 pkg. good devil's food cake mix
1 pkg. (4 serving) instant chocolate pudding mix
1 c. sour cream
1/2 c. cooking oil
1/4 to 1/2 c. coffee
1/4 to 1/2 c. dark rum
4 lg. eggs
2 c. chocolate chips

Combine all ingredients except chips in bowl of electric mixer on low speed then beat on medium for 1 minute. Stop, scrape bowl. Pout batter into well greased and floured bundt pan 350 degrees 40 minutes to 1 hour. Cool in pan on wire rack until cool. Turn out gently. Let stand overnight then serve.