Project Delica - Swapping 8" & 9.5" diff into 96 Delica

[VR Trooper]

Hey, I'm just starting plans for a new project I hope to do next spring/summer.
I'm looking for info on driveline specs and model compatibility for 96-03 Challenger/Montero Sport, 00-on Pajero/Montero, and 94-06 Delica if anyone here has experience with any of these.

I'll be putting an '03-06 Pajero/Montero 5spd Sportronic transmission into my '96 Delica, and I'm planning to upgrade to 4.30 Ring & Pinion from the same vehicle.
But the Pajero is a 8" front and 9.5" rear, while my Delica is a 7.25" front and 9" rear.
Requiring me to do a whack of homework to ensure the swAp is possible and that I get the right parts.
Currently I'm at the tail end of a 3.8L Mivec transplant into my Delica and I'm gonna start searching for the tranny components for this next project.

I searched OuterLimits a few months ago and still have more digging to do.
Bitsamissin has helped me greatly on the Challenger/Montero sport specs, and I'll be looking for 00-on Pajero/Montero Sport specs.
I'll have to re-read my notes, but everything looked doable, but my only option was to either swap a Challenger/Montero sport rear axle into my Delica, or weld the core of a Challenger/Montero sport into my Delica rear axle.

Any advice or knowledge you can offer would be greatly appreciated.
I always try to give back as much as I can, in sharing my knowledge.

Cheers,
Ryan