[oilio]

Hello I'm new here.
I'm from NSW

I daily drive a 1992 sj70 1.3 sierra tin top

I have a second sierra running a g16b with the twin cam head off a suzuki swift. Has been running in current configuration for over a year. With reduction gears and 31" M/T

The main plan is to swap this engine and transfer case into my daily. Relatively easy. But.

The opportunity just came up to buy the diffs and complete coil suspention from a 2018 jimny, repairable write off. 
Obviously a huge amount of work to convert, also requireing a change in wheelbase and track width. 
But would a modern coil conversion be worth the expense?

I have spoken to an engineer and it can be passed if done right 

I want it more comfortable for longer trips and more capable offroad

I appreciate any input.
Thank you

[MrRocky]

You can set leafs up to ride just as well as a jimny with the added bonus of suspension geometry that actually works.
It would be better to forget the jimny diff idea and design a coil susp setup to suit your needs.
Alternatively im sure there are hoards of coily owners (1996+ sierras) who would swap cars lol

[Gwagensteve]

Yes it can be done, but what makes you think it will add capability?