Outer Limits 4x4 Board

hi every one just after some advise i went to land cruiser mountain park over the weekend. went on a few good tracks like the test track good fun. i noticed my 4runner wants to tip over alot. there is no down travel in the front. so the question is wound i be better off doing a trail gear sas kit in it or buying a 89 leaf sprung lux and work from there. my 4runner has the snake racing 4inch lift kit and 2inch boady and 33inch mudds no sway bars. i want more flex with out the wheels 10 feet in the air the whole time a little scary . any advise would be great thanks