Yeah, I've been to all those places before and none seem to have the one for wagons. I believe the Concord and Hornet Hatchbacks are different models than the Concord and Hornet Wagons.
I believe this is the style Hatchback they carry stripping for...
Which would be WAY to big since the whole decklid and rear window open with the hatch.
Have you tried your Jeep dealer yet JayRamb? They may have some NOS still.
I even have the part #...
It's Mopar Part# J3742795
I got mine back in 2002, I don't remember how many they said were left in the National Inventory, but I don't think there was a mad rush for them since.