Just ordered a set of Cobra power port true duals and some V&H 450 Titans for the glide. The guy (Tom D.) at AmericanClassicMotors said they are totally separate header pipes all the way (which after research they are not). There is a crossover piece between the two (to help retain low end torque ?) Well, i dont have them in hand so not sure til they show up in a week. Maybe its better with the crossover for sound or performance ? Anybody have these ? Sure would like to know if I need to send them back before i install them. Thanks for any help.