raptor 660 exhaust help

[rdw03400ex]

need help picking a replacment exhaust for my friends 660. he originally had a carbon fiber gytr and it split in half. he is undecided between a white bros e series or a dmc alien. both are full systems and the same price. also would like to know how they both sound on the 660. help please.

thanks

[dpizz450]

id get a white brothers over alien. but did you ever consider HMF or sparks? two of the top of the line exhaust IMO

[400ex28]

Neither

[rdw03400ex]

yea but these 2 are used and at a unbeatable price.