I just installed the aluminum blower motor wheel from auto zone $12.99 plus tax part number 35601. much better air flow due to the angle and shape of the blades. Mine made contact at the top of the housing so I just lowered the cage a little on the motor shaft.
My GN has 5 14 87 on frame above the differential, 5 14 87 on the drivers door sticker, 5 14 on the build sheet that I found in the drivers door and it is also on the ignition module passenger side 5 14 87