I ordered a replacement clutch from RAM and they sent me a three finger design (like number two). I believe the original clutches were three finger design, but I can't say that for sure.
The three finger design uses the centrifical force of the spinning clutch to add pressure to the pressure plate - as the engine speeds up, it pushes down harder (you can see the weights in your picture).
My upgraded engine will use a diaphragm style of clutch (sort of like your picture #1, but with fingers all the way around). Apparently they are easier on your left leg.
