G'day emu. My GU has had a chassis extension done rear of the spring hanger of approximately 400mm - gives me a tray size of 2400x1900 internally. Over hang is a bit of pain as it does reduce your departure angle- tow bar will drag at times. My ute is used for work ( mainly on road ) so I can put up with it dragging occasionally.Hopefully when I upgrade suspension I will gain a little extra clearance.Ideally a chassis extension should be done in front of the rear axle giving you a longer wheelbase - bit $$$$ though.Of course then your ramp over angle changes.