i ran a b4 on carpet for bout 4 years i used blue springs all round .piston 2 in the front shocks and no1 in rear 35w front 30w rear middle hole in both towers. outside hole front wishbones inner hole on rear.top links as kit .short wheel base .yellow mini pins all round. idid try silver springs on rear but car was easier to drive with blue springs. dont 4get to put weight in car. hope this helps
