Re: 156 SportWagon Suspension Upgrade
My Veloce was sitting on the ground and was effectively undriveable when I bought it - but that wasn't that standard suspension. The first (and only previous) owner had specified the Nivomat self-levelling suspension, which is a self-contained shock-absorber unit developed by Boge Sachs. No external compressor, load sensors, etc. All done internally in the shock unit.
However, when I got the supplying dealer to swap the suspension, he put SP3 suspension in there - and he said the rear suspension was not Nivomat suspension either.
Any supplied front springs will be rated according to the front axle weight, which varies quite a bit - a 1.6TS is light, a 2.4JTD is heavy! All rear axle loads are rated the same, so you will more-than likely get the drop you want - looksing at your picture, your car is sitting as high as any stock 156 SW in the rear.
Just Sold: 2001 156 2.4 JTD (140) Sportwagon Veloce
Replaced by: 2004 (54) Saab 9-5 2.2TiD Linear Sport
Also own: 2007 (07) Vauxhall Astra Twintop 1.6