STC1910 Guide Pin Kit. Part Number: STC1910. Range Rover P38 & Discovery 2 Rear Brake Caliper Guide Pin Kit. Range Rover P38, (1994-2002). Series 2 & 3 - Defender 90/110/130, Discovery 1,2,3,4,5 & Sport - Freelander 1 & 2 - Range Rover Classic, P38, L322, L405, Sport & Evoque.