I know the 6.0 had the internals for the block heater. It was in a freeze plug towards the rear of the engine on the pass side I believe. All you paid for was the plug and wiring. Not sure if the 6.4 is the same. Should be straight forward to install either way. I ordered mine with the...
My F450 was built in March 2007. Last October my radiator started leaking. I happened to be at a show with a Ford rep there. He said some of the tanks weren't fully attached to the cores. I took it to Sunrise Ford and they had it back to me in a few days with a new radiator.
David