Outer Limits 4x4 Board

Hello Everyone, Im from Panama, Republic of Panama.
This is my triton, V6, A/T, 35's tires, ARB bull bar.





And this is what I want to do.
I will like to swap a complete rear diff from a V6 nativa (challenger) with its OEM rear diff lock.

The complete rear differential from a Nativa (challenger) has any difference from the L200 rear diff?

Why Im asking?
I have the opportunity to buy a complete rear differential with disc brakes and diff lock for $450 and I want to install it in my L200.
The advantage:
- I gain disc brakes
- Rear Diff lock

Mine doesnt have any of those things I mention.

Another question?
Are the gears from the rear L200 diff are compatible with the housing of the rear Nativa diff?
Why Im asking this?
My gears are 4.30 and they told me the nativa has 4.62.
The other option is to buy the front gears from the nativa, are they compatible with my front diff housing?

Some pictures of the rear diff and the lock switch.

Sounds like you are planning to swap the whole rear end over ?
Looks like the Nativa (Challenger over here) is a leaf sprung version ?
If so it will be a direct bolt in.
The Triton is made off the same chassis design as the Challenger.
You could use your 4.30 C&P to fit into the Challenger rear diff centre which would be the cheapest option or as you said buy the front diff from the Clallenger and puit the 4.62 C&P into the Triton front diff. This would probably be a good move running 35"s anyway.
Good luck.

Will it matter if the challenger is an older model?
Looking at the dash pics I would think early 2000's, trying to fit up this to the ML triton which is a newer generation (and would not share the chassis with the older challenger)