Which Suspension do I have? 2nd hand station wagon

[Turbine205]

I bought a second hand Grenadier back in May and have done about 20k km in it. Most weekends have been spent in the dunes of the Middle East (when it hasn’t been too hot).

Before I made any upgrades, I wanted to see how the vehicle ran “stock” but now I’ve started poking around. It seems that some upgrades were made to this vehicle before I took ownership. Some I already knew about - air-lines going to each of the four wheels for example - but others seem less overt.

Take a look at these pictures, does anyone know if this is stock suspension or an upgrade to the GVM? I don’t believe that there has been a lift, but I might be wrong.

 

[Clark Kent]

I've only ever seen yellow factory springs so I doubt these are the originals The wire size looks a bit thicker than standard so they might be heavy duty. I don't recognise the red paint.
I'm not aware of any HD springs that are not a lift spring as well. There is growing interest in that option. I'd also be keen to learn what you have here.