FMD, the diesel shop agrees it's either the cam or the lifter (not much else it could be). To get the lifter out, you've gotta take the cam out. To get the cam out, the engine has to be upside down unless I can figure out a way to get around that.
Since it failed all at once, I can't imagine the lobe on the cam isn't jacked up by the (presumed) failed lifter grinding on it. I've got a call in to see how much a cam costs. I'm headed out now to pull the pan and see what I can see looking up. I should be able to see the lobe and perhaps what's wrong.