There is an armoured model,but getting those parts,etc,is probably not economical anyway.
Someone on here looked into it once,it may have been Tombie.
Most of the lower GVM upgrades,that are the most common are just new coils and shocks,plus the paperwork,plates,etc.
The higher ones also have axle strengthening,different wheels,etc.
I don’t know how you uprate an air strut?
Do they have a rating?
They must I suppose.
All Land Rovers from D5 years onwards,can’t be legally done anyway,except maybe in the US.
Some are also a bit light on to be towing the big weights.I see a few on the forums have replaced D5 with RAM,or gone back to LC200 as they tow the big weights better.
The golden rule is not to tow anything heavier than the tow vehicle if possible.
That’s where a lot of lighter duty dual cab owners get into trouble.

