http://speed-daddy.com/stainless-ss-...impala-3-8l-v6 looks like they did away with the goose neck a per this sd link. hard to tell with the pics tho.
top left part/pipe in the bag is the goose neck in the down pipe.
you can get a new dual wall flex for 20, another V band camp for 20 off ebay, a high flow cat off ebay for 50 shipped. cut the old flex off, cut its 1/2 of its band clamp off the old flex, then add the new band clamp and the 1/2 you cut off the old flex to the new flex, now you can just un clamp the flex down the road if it needs to be replaced.
the goose neck is not really in the way of hitting the ground, i used a 6 inch flex and it lifted it up some. before i changed the flex out it only hit one time and i went and hit the tallest speed bump i could find and went over it dead straight, it tapped the bump. if i went over it at a angle nothing touched.
im on a 3.2 ic top swap set up kr free, with tuning of course. and still got the goose neck in my headers. its not hurting anything in my book.