Chiz ...

I have a dropped Mk4 myself .. with the decambered springs. You used to be able to get two heights .. Mine seems to have dropped 5" approx, (and matches Turbo car ride height at the front) I really would'nt go lower ; )
Have a word with Chris Locke on this thread .. He might be able to help you!

escort rs turbo mk3 van breaking (lockesRSparts)