Yup, all the brackets on the XJ axle will be coming off and an Artec 8.8 TJ truss will be welded on. Artec has instructions to adapt the 8.8 kit on a Dana 60 & Wagoneer Dana 44 so it should work on the XJ Dana 44, maybe.
If I wasn't going the Artec route... spring perches, shock mounts, lower and upper...