First thing I would do is get the front end fixed, then worry about the motor. If it runs and drives good, I woudln't worry about bullet proofing it just yet. What are you going to be using the truck for? Daily driver to and from work? Or pulling heavy loads every day?
With 227K miles on it, you really need to get it running and driving and see what kind of shape the motor is in. If it was well taken care of, you might be ok to just do an EGR
delete, rebuild the oil cooler, flush the coolant, and drive it. If it's been abused and ran into the ground...it might not even be worth messing with it (depending on what you want to do with it). The list of parts these things "might" need can be very long...and very expensive...especially if you have a shop do the work for you. EGR
Delete, Oil Cooler Rebuild, Turbo issues, Injector issues, head gasket issues, cylinder head issues, camshaft, lifters, pushrods, d-plugs and standpipes, FICM
, oil leaks, head gasket issues, on and on.....
It's really going to depend on what it actually needs. Just it running and driving first.....and then go from there.