Help rebuilding 8 3/4" Sure Grip!

They had an article in the old chrysler power mag years ago where they machined down the ends of the cones so they would not bottom out in the case, and then shimed the side gears back to the spider gears (as the cones ware the side gears and spiders pull apart). Then they put clutch pack springs from a 727 trans in side of the existing springs and made it stronger than it was from the factory ( so the mag said).