I love the xl. Its my second one and well worth it imo. Even tho I had to replace my throttle first day I desisted to run it.
What x are you getting?? Are you getting the old x or the 2011 x?? If your getting the old x you can suspect diff problems and that's pretty much it. Also I have no clue what goes into the xl conversion I do know the extended chassie isn't all you need..