How to swap cone type to clutch type?

Hi, I was just wondering what can be done with worn out cones ?
What would you do with them ?

I have a 489 _ 3.55 to 1 (cone as far as I know).
The stupid thing whines, tone varies with change in vehicle speed.

Thought about a clutch type if a centersection could be found cheap enough, that did not need repaired.

Is the crush-sleeve alternative (solid) availiable for the 489 ?

Whine is more likely gears, not the sure grip assembly.

Machining the cones is how you fix that style sure grip with a hardened shim to take up the difference.

Yes, the crush sleeve eliminator is available for a 489 case.