If i do not find these i will order custom rate coilover sleeves like the ground control
The B-spec springs are made by Eibach right? Ground Control coilover sleeves use Eibach springs.
Specs according to ProtegeFAQ:
25mm drop
F: 26.5N/mm (2.7kgf/mm)
R: 15.7N/mm (1.6kgf/mm)
Too lazy to do the conversion.