Hi yes I did the install myself, not hard, but you need to be able to fully support the frame and then to suport the axel. I used the level system to lift the wheels and then used jackstands to holed as safety. Using a floot jack to lift the axel into place. I used ratchet strap to pull the axel front ot back when lining up the pin for rhe spring. Be very careful when drilling the holes for the self tapping screws that hold the slipper box to the frame. They can be stripped if the pilot hole is too big.
My cost with the shocks was about $1,500 .
Well worth the money now only have 2 greese fittings to wory about.
Only thing I had to modify is grinding a bit off the opening of the slipper box at the frame to make room for the reinforced angles inside the center hanger bracket,