Im deciding on which to get, but i need to know which is a better choice. then what is the size is of each, like zzp is 2.5" but whats the bad news racing? lastly is what comes with each one and if anyone has one then i would like to know how much the sound changed and how well they work. thanks

Looking to buy a used aftermarket down-pipe, Please PM me with price and location. Just feeling out the market before I decide to buy a new one. Sent from AutoGuide.com Free App