Seems there'd be shims from other makes/models that would work? A good NAPA store oughta be able to come up with an equivalent that'd work better than what I could cut from stock.
Matthew 6:33
1952 Chevy 1/2-ton 3100 Late '55 235/SM420/torque tube 3.55 Dalton Highway survivor (using original 216) www.truckwithaheart.com