only thing that varries is the front axel load differs between models what whith the lump being heavier
ull be asked is it up to or above 960kg's 1.4 - 2.0 l's are up to 960kgs petrol only desiels im not so sure about but ovbs the v5 an v6 are heavier than the 4 pots.....
the weight makes the front end sit down more so springs are suited to heavier cars
so if you wanted theres nuffin stopping you puttin 1.4 shocks etc on a gt tdi 150 ps