I stopped receiving notifications from this thread so I figured it was abandoned like the other cummins install attempt on another 4x4 van forum. But I started researching if a 05-07 coil spring f350 D60 is a better choice than my 88 kingpin plans, and low and behold your still at it! Sweet!
Here's a little vid of my cummins E350 beast towing 15k combined after my rebuild at 80 mph, 2300 rpm, 850 egt, 14 psi, 14 mpg. A few days later I got stuck in loose stuff with my open diff, so it really needs to be converted. Bad
Congrats on the progress!