I do have a coil spring 60 in my Blazer from a 06ish super duty. Click on the link in my signature, there are some pretty good pictures of how it fits at full compression on the last page or two.
I don't think you would ever be able 4 link it, 3 link maybe. I just did radius arms with soft bushings on the housing end of the links and it seems to flex fine. Make sure you do a high steer arm (a few places will mod a stock arm) and keep the track bar as high, as long and as flat as possible for best drivability. When I originally built mine there weren't any high steer options available so my drag link and track bar angles were a little steep and it did some weird stuff when I pushed it hard out in the desert or in the dunes. Since I raised them it drives flawlessly. Also keep the radius arms as long as possible to keep the angles in check, I think mine are 42ish long. Definitely don't go any shorter unless you are planning to keep the travel under 8-10 inches. I am currently at just under 16" of travel.