by far THE best i know is the dunk
my friend jeff has it on his lude.. it's so fawking hot.. it sounds even amazing at over 100mph.. well.. i really wouldn't know.. te he he... he didn't like the n1.. louder and more HIGH pitched.. more ricey he thought.. here are some pics...
(if you look at his bumper you can see my car on the right and my bf's car on the left.. haha)
another...