Well I ended up ordering an addicted Offroad winch bumper with the short squared off stinger. Not what I really wanted but it's nicer than most. It looks like arb uses the bumper bolt holes and also the holes under the frame rails which are now covered by the front spring hanger. So I decided rather than spend a $1000 on ARB and have to modify the mounts and cut the bull bar part of it off because I don't really like that part of it. I spent 400 saved lots of weight and see what happens. Let me know if you find something else out or if you get it to work
