You are right 970 3.0T(420hp)equipped with panamera S/4S/hybrid S in all markets. The standard S/4S is not made for China, where the 3.0 turbo in its detuned version is sold as a base model, called just the "Panamera". For other markets the base model has a 3.6V6 Porsche engine.
My panny is 2014 Panamera S Executive version,only longwheel base S version in china market.
Factory 20" cast rims weigh around 14~15 Kg/pcs,they're damn too heavy ! The forged one weighs less than 10~11 Kg/pcs I'd recommend the forged rims in the first place if fit DASU's budget