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Unless you want to run lots of lift and make your sj less stable you will always need to do some minor tweaks to the body to fit a decent size tyre.
In my mind there's only a few ways to go with regards to leaf sprung suspension.......It boils down to once thing....fitting longer springs, longer springs ride softer and flex better.
Yjs on the rear and RUF (sj rears up front).
Yjs all round
or a similar combination using hilux front springs.
Some decent 2" lift springs on the rear (that don't have high spring rate)and RUF