Not hard at all, especially if you've got a complete donor truck
. We've done several Cummins conversions on them which are too easy, this latest project we picked up a '97 F350 that was wrecked for $1000.
We're stuffing the guts into a '77 F350 crew cab. We hope to have it done for SEMA in November. There will be a writeup in Diesel Power and PSR.