This has been something I wanted to do for some time. When I had the 3rd scv installed I also had the power beyond loop added. Having read numerous threads about this and getting a lot of help from these forums I now have two more working scvs on my tractor. I copied Cocre's design and with the help of my neighbor, i commissioned a local welder for the mounting bracket, got the stack valves from surplus center, the hoses and fittings from a local hydraulic shop and the couplers from my local jd dealer. In the near term I want to add a second hydraulic cylinder to my rear blade for side to side angle. Will also be looking into a hydraulic tilt cylinder to complement my toplink.