Do you have gauges?
Sounds like a Dead Lift Pump, that took out a VP44 scenario. You could try your warrenty,, but most likely with the extra power, you can kiss it goodbye, especially if the Banks kit on your truck pierces the pump wire (Like all High HP boxes do).
It COULD be a crank sensor,, If you don't mind impersonating a redneck (HEY, I are one. ) would be to tow your truck with ignition on (or find a big hill you could pick up a little speed) and let the clutch out in gear,, hopefully your truck will fire up and run

but if not, then your tach should read some RPM, unless your tires don't have enough traction and are sliding,, (I recommend 3rd gear to avoid that problem).
Tow your truck about 15 MPH and let the clutch out in 3rd gear,, and see if you register any RPM. If not,, well,, read on. .
Personally,, I think it's a bad injection pump (VP44), you had lots of RPM, and puttin' more fuel through it than stock, and MOST LIKELY a dead lift pump, which means you would be operating an injection pump that was designed to be cooled and lubricated by diesel fuel, on a vacuum. (Imagine oil pressure,, instead of 60PSI Oil pressure, you get -12PSI,, motor won't last long. . Just like your VP44)
A dead lift pump won't wipe out a VP44 immediatly,, it takes it's time, and the injection pump goes out by belching smoke, missing, and lots of assorted scary things

or it goes out just,, kerplunnk. You could be WOT, lift off the fuel, and when you put your foot back down,, NADA, Nothin',, Zilch.
Piers Diesel Research has good prices on VP44's if your warrenty won't cover you (Pierced injection pump wire).
Hope this helps you.
P. S. I don't think 24V's have a shut down solenoid like 12V's.
and BTW, in the 1998 model year Dodge made both 12V and 24V motors. The trucks are near identical, with similar dashes, similar mirrors, and such, but the motors are VERY Different.