Well here in South Africa the stealers make it worth while the second time you do the full IFS fix exercise to rather have gone the SAS route. The big problem here is that we just don't have anybody with the expertise to even want to touch your vehicle to do something like this. Talk to people about SAS and they think you are mad. They will tell you to rather just sell the IFS vehicle and purchase a Patrol.
I have even looked at doing a body swop onto a Safari or old Patrol running gear, but that opens up a whole new set problems. I would have to relocate fuel tank and filler position on the body. With a right hand drop on the patrol diff, I will need to cut and move portion of my sump. The chassis will stick out 12" past the front of my body I have.
To further confuse me, last weekend some guys went wheeling and in the group were two Jeeps. Both broke universals on the front diff. A Fortuner broke a CV, but the Land Rover's, Isuzu and Nissan Pickup had no problems. The Dana diff is starting to worry me as to it's strength.
My truck is my daily drive, so I don't really want to go too high and mess with my road manners.