I did not figure it out yet. I managed to get the 6.0 swap done and was happily driving it for months, then tragedy struck. Either lost a head gasket or cracked head, or heaven forbid a cracked block. Whatever the case, I was loosing coolant and it's been parked for months now in total disgust. Everything was new in the 6.0 and it was assembled by a well regarded builder out here in Socal. So the rear axle continues to sit in the shop until after the engine is pulled back out and fixed again. So bummed with the whole situation, but I'm not abandoning the thing entirely...just gotta get back to it.