So it looks like, seeing the photos, the majority of the modifications would occur within the driver's area, the doghouse, and the passengers dash. Other areas wouldn't match, but they look like they would be compatible.
The worst bit would be rewiring the gauges around the dash, and the switches, because almost everything was moved somewhat. At least the HVAC controls didn't move. Maybe 4-5 major dash pieces would be required? And the door panels? And the seats if you'd change them out. That's to make it "compatible".
Hope this helps (hypothetically speaking
)