For R20A3 engine model 3rd clutch: Install the waved spring (A) in the 3rd clutch drum (B). Install the clutch flat-plate (C), the clutch disc (D), and the clutch flat-plate (E). Starting with the clutch disc, alternately install the clutch discs (F) (4) and the wave-plates (G) (3), then install the clutch end-plate (H) with the flat side toward the top disc.