The diffs are standard as far as I know.... will find out soon as I need to do some work on the front diff. While out I will probably put a diff locker in it, ARB probably. The suspension lift is 6 inches, I believe. Has Rancho RS9000 shocks with manual hardness settings, so can make it ok for road and then set it to allow the axles to articulate more when off road. The tyres are 315/75/16's.
The car runs as standard in 2wd and push a button on the dash to engage H4, when using L4 4wd is automatically engaged. There is also manual free wheeling hubs so even if you select 4wd and they are not locked it won't be in 4wd. This 2wd/4wd conversion is apparently done to save the CVJ's with big tyres. I was told for 37"/38" inch wheels this is a necessity or get heavy duty CVJ's.
I've replace the Propshafts for heavy duty as well.
Hope this answers some of the questions, glad to hear you think i's ok. Any other questions just ask.
Cheers