5.4L gas to a 7.3L DI turbo
7.3L DI turbo complete from or for an E350 (turbo is different and air intake is smaller than F series
E4OD transmission (if not already in the van)
Flywheel?, gas pedal assembly, radiator, core support, upper/lower/heater hoses, belt, vacuum pump, overflow tank, radiator cap, alternator, batteries group 50 and 65, batteries cables, pcm, idm, wiring harness, exhaust system, driveshaft?, air filter assembly and tubing, engine mounts, various nuts and bolts.
I do not know where the ac compressor and power steering pump is on a 5.4L gas in an E350 and if hoses are the same. Battery bracket for second battery. Dash components, wait to start light?
Engine hoist for the 7.3L. A special bracket made by Rotunda (well when I bought one) and extra person (225lbs or so) to stand on the engine hoist cause it will nose dive with the powerstoke attached. I know.