I think it's spring rates on the front and rear, plus the shorter rear dampers and the 17"'s give a slightly lower ride.
Pre-facelift MV6 - its the shocks ONLY that lower the rear. Springs are the same throughout the range.
Facelift MV6 - Its shocks and springs

Just found a broken drivers side rear spring on my
3.2 elite, and its worse than i first thought as the whole bottom coil near the centre has gone, the back end feels wayward, and i have to put it down to the spring as i have just had 4tires 2 new dampers with self leveling, and a wim set up.
So question is, what springs? Can i fit Mv6 springs and lower the ride hight on the air suspension(some how) i presume this may bottom out sooner though?
Since replacing the rear dampers the fronts now feel softer, so if the rear will work with Mv6 springs and stock sl dampers, i will go with mv6 all round. If that maker sense. Anybody know? Cheers.
Ps was going to start my own thread with this but that seemed abit silly while this has got all your attention. Hope you dont mind?