On this Spartan it was pretty straight forward.
I got my radiator from Superior Cooling Systems (Superior Part No: SC-239380) this is the all metal one. Fit perfectly. I found it using part number 1227FF1 off my quote from Cummings.
First get help. You can probably do it by yourself but why?
Seemed to follow what other posts shared.
with he following exceptions
Removing the grill required removing the 6 screws on each hinge. unlike the FL the hinges don't separate. (this was actually one of the most frustration tasks of removal.
I was able to access every thing from outside. Either the side or under the rear. Really not much to get to from the rear engine cover.
I just cut the lower angle iron the grill attaches to. ( this made getting things out and in very easy). I was able to weld it back on. I would guess a couple small pieces of angle iron and bolts would work just as well or there is always JB-Weld.
My radiator was short one of the small fittings so I reused the one from the old radiator. Probably best to wait till the radiator is in place before putting these back on. It would be easy to catch one of those and break it off during installation. (no this didn't happen)
There are 12 bolts that hold the fan on the shroud but only 4 nuts that hold the shroud to the radiator. So i opted to free up the radiator. Bring it out a little and remove the nuts holding the shroud to the radiator. I think this made it easier but not by much.
Currently the new radiator is bolted in and the hoses hooked up. We will see what tomorrow brings.