For R20A3 engine model 2nd clutch: Install the waved spring (A) in the 2nd clutch drum (B). Install the 4.0 mm-thick plate (C) with the shear droop side (D) toward the inside of the drum, the clutch disc (E), and the 2.0 mm-thick clutch flat-plate (F). Starting with the clutch disc, alternately install the clutch discs (G) (4) and the wave-plates (H) (3), then install the clutch end-plate (I) with the flat side toward the top disc.