KONI springs

I've been a long time reader of Briskoda but a rare thread poster as the search usually gets me the info that i need but unfortunately not on this occasion!

Anyway, I have a MK.4 Ibiza PD130, which as we all know is very similar to the Fabia VRS

i currently have a KONI kit, 30mm drop fitted but the rear of the car still sits high :(

i have noticed that the fabia KONI kit lowers 40mm and i'm thinking of using the rear springs from this kit to lower the rear of my car a tad more.

my 1st question is does anybody have the 40mm koni kit fitted & do you still have the Spec sheet which came with it?

the spec sheet (which is in dutch) lists the spring spec. Bar diameter, number of windings, length etc.

if somebody could post these numbers it would help me to know how much these will lower my ibiza by, as i'm not sure if the standard fabia springs are the same length as the standard ibiza springs to start with, does anybody know if the standard springs are identical in length?