HAHA That's the kinda quote that will get you. I fell for it. It's not quite that simple. Buying the springs is the easy part, its all the hidden issues that will get ya. Just do a search for "death wobble" and you will get my point. Heck, I've got a thread in the forum right now about a problem.
Don't get me wrong, Lifted XJ's are sweet. But saying that is pretty foolish. You do have to make quite a few changes. Its not like you just slap in some springs and your all set. I haven't heard of to many guys who just spent a Saturday in the driveway and wheeled off to happiness.
And if his sig says "I want my YJ back!!!!" then he probably doesn't have the stomach for it anyway.
(JMO, not trying to get everyone all mad.)
Later,