Zed,

I have both the flywheel and the bell from a truck setup. The bell feels like a bag of portland cement and the flywheel feels like 30 pounds. They were perfect for my truck (or any for that matter) but not for racing, in my opinion after seeing how much the racers knock off weight. If you just want a tough set for road sport these oughta do, but not for dragging on a track. If you have any interest in them......

rock
'64d100