Hi guys i drive a 2ltr 2005 a4 b7 shape im looking to lower the car as i have just put on some 19" alloys....but iv been finding it hard to get lowering springs that lower by 45 or 50mm

Now i have been told the b6 springs will fit the b7 as they are the same is this true???

Plz plz plz help or if anyone knows where i can get the correct springs plz post up some details....cheers