As Billy said, the haft shafts are the same size on both sides and compatible as 95+ trooper CVs. The jack shaft (inner axle shaft with green cup) are different and as far as I know impossible to find the left side aftermarket.

On a side note, don't buy the complete EMPI CVS, only buy the EMPI without the cup. They use Tripod joints on the cup rather than rzeppa joints and they do bind badly when the suspension travels.