[eric8]

It is much much larger than it looks in the pics. Super heavy spring. After playing around with it and pushing the pedal through its range of travel, the big spring appears to be the exact opposite of a return spring. Rather, it feels like it is assisting the pedal to go to the floor once it gets through the first 25% of its travel. Maybe it was used on C20s with super heavy duty clutch setups, so the pedal effort wouldn't seem so high? You'd still think they would show the spring in the parts breakdowns or assembly manuals if that were the case though.