Jdm dc5 parts benefit to audm dc5.

Hey guys. I have a dc5 Type R from Australia. and i have a rolling shell that is from Japan of the same dc5 Type R. I want to benefit from the rolling shell.

What parts can i benefit from the Jap version and swap it with the audm one besides the Rims and Brembo brakes with control arms, axles, hubs.

I also know about the powerfold mirrors, but is it hard to do the swap.

Also, i found a rear stiffener/strut bar in the JDM one right behind rear seats under carpet which the AUDM did not have.

Besides those, what else can i benefit from?

Engine + Gearbox + ECU are non-existent as it is a shell only.