redneckwrangler

So i have a 2007 wrangler, and i keep hearing bout people puting a 4BT in their older model jeeps without TOO many problems. I am really looking into this engine swap in my 2007, i know it sounds crazy and all, but, i was wondering anyone would happen to know if the 4BT cummings would slip in just as easy in my 2007 as it would in an older model or not? I understand it would be alot of work to be done. Im just wondering size wise?