If you look closely he doesnt have exhaust tips in the vid. the cross flow 80 series muffler is a single inlet, dual outlet. The only 80 that would fit, if you wanted to show exhaust tips then your valance would need to be moded wide enough for true dual tips on one side or you can pipe one outlet to the other side.
@G6 lover: oh ok good to know i liked the set up he had.
@filian: i was so confused cause that is the only way i could think of doing it was running outlet on both sides of the car. i want to run dual out the rear just need the part number for the valence.