Mk4 rear springs

[kaneda]

I currently have a set of Bilstein shocks alround and Eibaich springs on the golf which i am happy with the ride tho I dont like the rear ride height as the car sits a good inch and a half higher. So insted of trying to find lowered springs for the rear that are lower than whats in it but not lower than the fronts i thought i would just get a pair of lowered rears with an adjustable seat like what comes in coil over kits. The problem im having is that i can not seem to buy these by themselfs ? anyone know a solution ?

here is what im chassing