I went in the mud with a buddy of mine last week in my Sport, he has a 93' Nissan light truck. He has 4x4, and all I have is a solid 9 inch Ford rear axle. We were in 3 inches of red clay/mud. I put about 600 pound of concrete bags in the back of my Explorer. I amazingly got through most of the mud without getting stuck. In the mile long track I got stuck 3 times, the first two I rocked out, the 3rd I had to be pulled out. The concrete was 50 pound bags that I had let sit out in the rain, and let sit up. Then you have a convient way of getting a large amout of weight on you back axle. And I don't have tires that are suited for getting in the mud. But I am planning to do a 4x4 conversion, my problem is finding a divorced t-case. I'm not sure where to find one, or what kind I should use, but for mounting I'm fine. I have a brand spanking new Lincoln Arc Welder in my garage, and I will be having fun with that.
Ives