So ya i just purchased a Apexi N1 to put on my 7 and i have a racing beat true dual system that i am trying to sell. I am keeping the dual header and i no longer have the presilencer so i am selling the y-pipe and the 2 racing beat mufflers. These 3 items brand new would cost right around $700 which is what i paid for them. They have not been on the car long and they are clean. They are currently on the car but will be coming off as soon as i get the N1 in which should be sometime this week or early next week. Looking to get $400 obo i think this is a very good price im not trying to bull shit no one, either you want it or you dont. If you want to go the complete dual exhaust system all you will need to complete it is the presilencer and the header. With this full system i added 20 HP from the stock exhaust setup which a few people on here can say is the truth. It is a very nice system and keeps a stockish look with a nice sound. Send me some offers and ill see what i can do. If you want to see pictures of what the system looks like just go to racingbeat.com and look up the full exhaust systems and it will be the true duals