ok my very good friend and i are in a compatition here. He has a 2001 Black Bullit and he has cat back magna flow muffler system. Now I want something a bit louder than his with out haveing to pay 600 dollars just for the system when he paid 600 for the system and instulation. ive been doing a bunch of research and found a few things but not really. I found IMCO performance exhaust but have never heard them or know anyone that has. I also dont know what the magnaflow magna packs sound like on a car other than on a coputer and it didnt sound all that "aggressive" like the site says it does. anyone a helping hand would be cool. this is for my 2004 MAch1.