I've been reading about what you have to do for these. How many people have done it? I'm not too worried about the rear at most you have to mount perches but the front seems like a bit more trouble. I've been trying to figure out the simplest way to get the right axle with the right knuckles seems tough though. I also looked at just buying one from currie and other places but $2200 is pretty steep.
I just got done swapping in the 8.25 my D35 was roaring pretty bad. But now I saw this was possible and I want to try and under take in in the next year or two depending on money. I'd also want to do a re gear and maybe lockers while I had them out. I'm planning a lift 3-4.5 leaning towards Rubicon Express I hear lots of good stuff about them. Then I haven't decided on tires but probably 31-33.

 

Welcome to the forum.
Since this is your first post I'll play nice.
You should go read the rules.
Thus section is for fab only not chat about fab.
This needs to be in advanced chat.

 

With 31-33" tires you can run a C8.25 with 29sine axles that came in the newer model Xj's then for the front run a high pinion Dana 30 with the bigger u joint axles and you'll be fine

 

Not fab. This should have gone in Advanced tech.