I installed an alpha-x in a 2012 dragon two weeks ago. Easy install. Hang your tunnel from the ceiling of your shop and take out your stock skid (4 bolts). swap out the hyfax and hardware as indicated in the instructions.
The only problem i had was that the cross shafts on the stock skid that i had to use were not round from the factory. There was a big difference in the size of the stock shafts from one to another. They would not fit into the Holz bushings. I had to spin the shaft in a metal lathe to get it to go into the Holz suspension.
That was the only hiccup. If your Cross shafts fit, its a two or three hour job. by the time you get the new skid on the sled straight and tensioned properly. Go for it! No more clapped-out D-8 suspension for you! and 8 pounds weight savings. Good luck