What did you do for lower shock mounts? The Dodge 3/4ton D60 I used bolted up perfectly at the leafs but I had to fab up some lower shock mounts. The rubber brake line was even the perfect length for my 7" lift. Also what did you do for the e-brake lines? One was too short and neither matched up with XJ bracketry. Also the pinion on the D60 is so long you may have to shorten your driveshaft or move the axle back. I relocated my axle back 2" and the Driveshaft just fits.
Yeah it bolts up but I wouldn't quite say ZERO modifications.
D60s are big, heavy and wide. If you don't want to go full width and ATLEAST 35" tires, go for a D44.