can you swap any other transfer case for a 84 Suzuki samurai and other transfer case match

Do you mean any Suzuki transfer case?
 Any Samurai T-case , yes.
The 84 should have a shaft brake . Later ones may not....Boxcar

The 84 should be a SJ410.  Which, as stated, has an ebrake mounted to the rear of the tcase.  While you can swap in a samurai (SJ413) tcase, the tcase gear ratios are not the same between the two.  So that will throw your gearing off a little.  SJ413 tcases have a 1.409 high ratio and a 2.268 low ratio.  I don't recall what a SJ410 tcase has for ratios...but I know they are different.

thank you and can you use any other make transfer case with out switching everything?

thank you and can you use any other make transfer case with out switching everything?

No.  Not that I am aware of.

Yes as long as it is a divorced transfer case passenger side drop. Dana 20s work well. as do the Dana 300.
The 20 can be regeared (Terra low kit) without changing the High range gearing : as it is a pas through T case. ( very nice )
And is absolutely bullet proof.
You will need some fab skills to do the swap: Mounts, drive line adapters , linkage , etc. Not a huge conversion......Boxcar...
PS: there inexpensive. A guy here in Astoria has 3 20s 1 divorced and 2 married for $350 for all 3....