I made this contraption recently for street or dirt trucks. It will allow you to adjust how much pressure the rear brakes get since lowered trucks get too much pressure because the valve thinks there is a heavy load, and lifted trucks lose pressure. Not sure how well it works because I removed the valve on my truck a few years ago, so I can't test it. Just snip the rod about 2" from the valve, stick it through the heim and bolt this bracket to the valve. They are available on my website if interested.