Upgrade Gen 2 Power Kit for 50 amp RV

I have a Gen 2 Power Kit. I would like to move it from my camper to a larger Fifthe Wheel RV, but the new RV requires a 50 amp service. I notice that you now offer a version of the power kit for 50 amp RVs. What components do I need to make my Gen 2 power kit work for a 50 amp RV?