The Jimny's have had coils at the back for a while now. Should massively improve the ride as compared to the old ones, which had leafs. The youtube vids suggest that it flexes pretty well now, although combining short and good ride is harder than long and good ride
Also relatively cheap to change coils if needed.
I wish you hadn't posted this Charles I've always had a soft spot for these
Lightly loaded they are 1000kg lighter than a bare bones (and most aren't) Hilux and 600kgs lighter than a bare bones SWB 40series. 1750/2000 kg lighter than the average over accessorised and blinged Cruiser. No wonder they work so well.