http://www.magnaflow.com/02product/s...=164&cat=Yukon

 

i checked out magna flows sound bites on there sight =\ kinda disapointed everyone said they loud maybe they make good horspower or somin why yall like em but sound wise didnt like em at all

 

Corsa sounds awsome on the site for the 5.3

 

IMO, the Magnaflow is definitely better performance-wise; the shorter Magnaflows are louder than my 22" muffler, but mine has a 3" pipe that goes from an offset entry to a centered exit. Connected to my 3" pipes, it's a smooth flow all the way thru! My truck really responded well to the Magnaflow and the headers.