The short wheel well moldings are for the BX2 option. L is GM 9637960, R is GM 9637959. Note the molding stops at the bottom of the wide molding.
The long molding is the non BX2 option. L is GM 9637958, R is GM 9637957.
The long molding is the non BX2 option. L is GM 9637958, R is GM 9637957.