The standard Jimny rubber mounts are notoriously weak when the Jimny is used in anger offroad. It is common to break one, you find your transfer box lever suddenly leans to one side or the stick seems to disappear into the floor and everything shakes and rattles.
In the early days of modifying Jimny's, everyone developed Polybush style heavy duty mounts. Indeed I have a set of mounts which were early production models from Off-road armoury. However, the material used in Polybush items or variants is hard and unforgiving. Yes, it is long lasting and tough but it does not lend itself to comfort. That is why I got rid of my caster correction bushes in the radius arms and went back to rubber based ones, to improve the ride.
The same can be said of the transfer box. The heavy duty polybush style mounts on mine have lasted well but they transmit every vibration and bump onto the chassis and body work.
Not really a how-to, more a rant on the mis-use of these fasteners!
I have had my Jimny for 10 years so it was owned by others for 4-5 years before that. Up to now I have been giving it a hard time off-roading it so I have not been too concerned about the finer details of how it looked. However...