what kind of exhuast setup is this?
 

how did he get dual on a 330?
is his setup headers and straight pipes?
http://www.youtube.com/watch?v=fc0CpAaQa-o

That's easy to get dual. Its probably setup by running one set of the pipes to one set of dual tips. The other set is routed to the other dual tips set. The pipes probably split right before or right after the rear axles.

It did say custom magnaflow exhaust on the video. Having straight headers? I don't know.