I don't have a 2g but to me it looks like there are 2 clamps on that piece. One in front and one towards the IC. Am I correct? If so I would say remove it and see what's on the other side. It looks like it will shorten it and expose another lip for the new longer pipe to slide on to. By the way, that greedy pipe looks all hacked up. Whats up with that??
Edit...
Now that I look at it a little closer, it looks like if you remove the coupler with the lip from the IC then remove the rubber coupler off the end of the greedy pipe with the 2 hose clamps on it the new pipe and the IC should fit up.
Edit again....
Now that I really look at it and think back, I'm fairly positive that is the black box thingy that all the 2g guys say is useless and can be thrown away. Somebody with a 2g kick in a post here.