Given yours is the fabled Pear White Unicorn.....

I can see your reluctance to do any mods, that cant be undone.

I'd suggest Bolt on rock rails... its the least invasive for that issue.
31's and some very minor front edge cladding trim ....
(If they ever achieve true collector prices, you can retrofit an un cut front cladding)
OME after market rear springs..keep originals.... and t/bar crank.
And as mentioned..the Trooper skid plates /3 pieces bolt on/off.

I am also a HUGE fan of the dylan/Curt tow hitch as a GREAT rear skid plate..
...it offers awesome rear protection, and it bolts on/off .

And..as mentioned re the LSD.. no mods required...
....just the appropriate application of e-brake when needed.

Cheers
Jo