I don't like my modified box mix recipe for cupcakes, can anyone suggest one using pudding?

I want to make tropical flavored cupcakes using pineapple cake mix, coconut cream pudding mix, and mango nectar in place of water. Do I need to change the proportions of oil, eggs or liquid or proceed as directed on box?

You shouldn't need to change them. I use box mix and use half & half instead of water, sometimes I use butter instead of oil and the proportions are always what the box askes for. If it seems a bit too thick, just add a little more liquid to get the right consistency.