PSD advice isn't applicable to your engine though.

the 7.3 idi and 7.3 psd share very little.

I'm afraid since 7.3 idi build ups are rare, you will be challenged along the way if you decide to pursue this, you'r not gonna get much help, and it will be hard to borrow ideas from anywhere because of the rarity of this motor being built up as high as you plan.