olds-tom

After identication of my vehicle I´m now looking for some customize stuff. Which spring coils of newer models (each make..) are equal to the ones from my model? In germany it´s nearly impossible to get some for the old ones but easy for the 60´s and above; some Olds should fit and has shorter ones.
for rear e.g. the Form of the ends from a BMW 5 model of the 90`s fit and is half the length..