71 nova defroster/heater housing

[Nova Jed]

The defroster ducts that go up to the slots in the dash? The defroster duct should be fastened to the firewall at the bottom of the duct and then two more screws where it Y s at the outlets. The y ducts on non A/C cars never actually attach to the heater box. Kind of tough to get a shot of that with the heater box installed. The Y duct should have a bent. L bracket that is riveted to the bottom of the plastic Y and a screw goes through that.

Hope this helps?