Here is a little upgrade i did on the XJ this last week, WJ knuckles on a XJ D30. This upgrade is benificial because its cheap and if your like me and cant afford to build a 44 or 60 well then....your stuck with what you got this upgrade allows for true high steer and a two piston caliper instead of the week single piston calliper, and a larger rotor to grab too. there are some tricks to the install but with a little research its easy to figure out what parts are needed. below is a list of parts i used to complete the setup. Mods if this is considered a writeup please move, thanks.
99-04 WJ Akebono calipers W/brackets
99-04 WJ Knuckles (Thanks Adamster)
99-04 WJ Akebono Brake pads
99-04 WJ rotors (redrilled to 5x4.5)
?-01 cherokee Spicer upper & lower Knuckle Ball joints
JKS 0.25 Flange spacers http://www.4wd.com/productdetails.as...mpaign=product
Here is the flange spacer needed to sandwich between the hub and the spindle. this spacer is needed because the depth on the knuckle is 0.25 shorter than the XJ knuckle, without it the hub will botom out against the outer stub shaft before it seats.
Here is a pick with the spacer installed. some say you should weld the spacer to the Knuckle so that it becomes part of the inside diamater of the knuckle, but i opted not too.
Sorry for the dark pics i think it was roughly 3am before i said put the tools down and go to sleep. Here is a couple picks of the caliper/rotor installed you can see i had to redrill the rotors since i reused my hubs. I used an old hub with the wheel studs removed and flipped it over face first on the rotor so i could trace out the holes (sorry no pics) mind you this is a lot easier with a drill press
All in All i spent roughly $250 not including the tie rod/draglink, heims, hardware ect..If you have any questions about this upgrade just ask.