swap shouldn't be to bad to do the motor and trans. Lot of work to get all the gauges working and such, but if its the same year of truck than there should be many electronics on that diesel because it would be the 12v P7100 pump on it which is all mechanical injection. would need to change motor and trans mounts, throttle cables, and the brain boxes between the trucks. fuel tank and lift pump need swapped. Even a few drops of gasoline in the fuel can cause the engine to run extremely hot, melt pistons, or cause a runaway diesel.
It's a lot of work, but its doable.
be much easier to just buy a good condition diesel truck and sell your v10 truck.
The diesel is definitely worth getting though! not only better fuel economy, but WAY more power potential and far more reliable. these engines are known to go up to 1,000,000 miles without a rebuild if you take care of them. as for performance the bottom ends are good for 800hp without needing to change pistons, rods, crank, or main bolts, etc... top ends just need studs, valve springs, HD push rods, and o-rings in the head if you plan to run over 70PSI of boost from large compound twins. but if you plan on that much power it wont be streetable either.