It does fit, and it will work.
Buddy and I did a 2000 PSD 4x4 5spd. from what I remember tach didn't work, OPS had to be swapped, and I think coolant didn't work. Reused PSD alternator.
Later buddy sold it and explained to the kid that bought it that it was in IDI, not a powerstroke, but the slackjawed kid apparently didn't understand, or was too excited and bought it. Buddy got a call 6 months later getting cursed out and threatened to sue cause kid bought a chip that didnt do jack ****.