I've read lots of posts about going with an x-pipe and I think its the route that makes sense for what I want to do with my Citadel. I've read the Dynomax x-pipe can have pretty low quality welds. I know some have gone with specific name brands like magnaflow and many people just say they got an x-pipe. I just ordered this setup off amazon - the reviews are good as well as price. I'll have the local custom muffler shop install it.