Yes, you are partially correct.. I have been in touch with Pedders, and all their coils is too short.. I found out through britparts website that the RRC coils is 390mm stock, so it is +4" lift coils i'd need.. I did find 2 kits though, one 4" and one 5", but they were over 1000£
and included new radius arms and everything..
Not quite sure what you mean with the "cut and turn" though..