When I added up the cost to build MY XK up with a super lift and all the extras I came to 5K and it still was IFS. This is one of the reasons I went out an bought a 2000 Grand Cherokee with a SFA. When I beat the crap out of this and am ready for a change I will sell the WJ and start the buildup on the XK. But in the mean time I am going to start looking for the axles. A D44 front and back would allow you to lock and gear how every you wanted. An additional item on my wish list is a long arm suspension (after a gas tank relocation). This would take the XK to a completely different level.