I was thinking that a LSD, with your loose dirt and gravel washboarded roads in the summer would be a nice benefit for the crossfire; and less likely to get stuck in the winter. As far as tires go, I'm pretty sure with the vehicles you have, that you probably know more about M/S traction tires than I. Wish you well w/ the decisions. I also agree with the above post about our sheetmetal rear end; take it easy. A few here have had their rear swaybar attachment point rip out.