Jackaroo Tyres

Just keep an ear out for your gearbox whining. . . . . .It's about the only weak point of the vehicle.

a body lift won't give you more air between the ground and the diff. It would give you more room to fit bigger rubber and lift the sills a little higher.

Leroy

I've read all the stuff about insurance, tyre placards etc. & basically I've ignored it all.
I trawled the 4wd websites and found that some other Jackaroo owners and Trooper owners in the USA & UK had put on the larger tyres with no problems. There is still plenty of cleararance around the guards and wheel arches and visually the tyres look really good - they don't look too big or oversize at all.
Essentially, it just raises the vehicle's clearance to what it should have been in the first place - close to that of a standard Pajero or Prado.
I put on a full set of Ironman Foam cell shockies a while ago and cranked up the torsion bars a bit to lift the front by about 20mm- which stopped the problem it had with the front end diving and bottoming out over bumps.
So altogether, it rides really well now and can handle all the rocks & ruts of a normal (non-lifted) 4wd.

I have 245/75-16 LT on the Jack, giving a bit of extra clearance.

These give a little bit less width than the originals, so going to 265/75-16 (also sounds like an LT size?) would restore the width and give some more clearance again.

I have stronger front torsion bars and higher springs which eliminated the touching on every rock syndrome.

I have no perception of extra body roll from the mods, it's probably less due to the extra stiffness.

I use a scanguage for the speedo as it allows an adjustment for tyre size changes.