I'm sure that you could adapt it for the purpose intended. The damper would be ideal for preventing a sudden drop in rpm's when you lift your right foot.

Naturally, getting it setup properly would be a real PITA. If it dampens too much, when you put the clutch in, the engine will run away.

Without sufficient damping, the rpm's will drop below the shift point for the next gear.

My thought is that you are going to have to err on the side of insufficient damping. The diesel is all to willing to run away if the rack is not very close to idle.

The damping requirement will be dependent on the rpm's and the speed of the shift (operator dependent). At high rpm's, you definitely need less damping to bring the revs back down quickly. At low rpm's, more damping is required, or a very fast shift, is necessary.

Be an interesting setup.......if you could make it work for all conditions.