To my fellow wagoneers looking to replace their rear hatch seal with a new one, Metro has an option besides using a junkyard Voyager/ Caravan seal..They indicate it for a Cutlass Cruiser and Custom Cruiser. It's basically a trunk seal, but with added footage. Looks like a good alternative.
http://metrommp.com/?f=detail&ModelNumber=MW00101&VehicleYear=1983&Make=CHEVROLET&Model=MALIBU
http://metrommp.com/?f=detail&ModelNumber=MW00101&VehicleYear=1983&Make=CHEVROLET&Model=MALIBU