I cant afford 7-800 dollar exhaust systems. Plus i dont really think its worth paying that much just because its brand name. I dont think its always true that u get what u pay for. Generic medicine, amd vs pentium, microsoft vs linux... list goes on. If it were an unknown brand then i would be hesitant about getting something like this but i have heard alot of stuff about monza and pacesetter. I just need to know if people have done any dyno on there Z with this system. I know alot of member have it cuz i did do a search on it and many said good things about it but never mentioned the performance gains with it.