On my 77 CJ with SOA I have custom springs from www.alcanspring.com . They have an extra 1/2 leaf on the top of the pack that wraps around the front spring eye. I also have anti-wrap spring perches from www.rubiconexpress.com . They are about 8" long.

I still have some spring wrap, but the combination of these 2 things eliminates 80-90%. When I first did the SOA, I had just the longer perches (factory springs), and still had some bad wrap, so a lot of the cure is the springs.

Bob
tufcj