can only find single exit aftermarket exhausts!?

[jdubg23]

ok,so ive got a 99 four door tahoe 5.7, so i look on youtube and theres a bunch of vids with 99 tahoes with dual rear exit pipes

http://www.youtube.com/watch?v=7pMSj...eature=related

now im trying to shop for myself, the only thing i can find is single side exit?? WTF?

http://www.magnaflow.com/02product/s...ayproducts.asp

http://www.flowmastermufflers.com/sh...oducts_id=3741

http://www.dynomax.com/part_view.php...348&engine=5.7

am i having a retard moment here?? any help would be appreciated guys.