Heating//AC in 79 trans Am

Ok . . . Im in a bind right now. My 79 trans am needs a heater for this winter (Yes i know winter has already started but w.e). I have the complete heating/ac unit(That is assembled inside of the dash) thats all i have. The heater core is there the only thing i dont have is the duct work and the wiring.

I also dont have the Blower, that is connected inner fender and fire wall. . . near the valve covers.

So i only want to get the heater working is the "Blower, duct work, and wiring" the only thing that i need to install it, and have it and working condition other than the man hours??