1963 Avanti heater set-up

[TimH]

Hi everyone, 

I’m working on a 1963 Avanti I bought this previous summer and it is, of course, missing various bits and pieces. In the interests of having a defogger and even cabin heat, I am trying to find out if the heating system was used in other vehicles or if there is such a thing as a generic system I can buy and bolt in. Thanks in advance for your expertise and knowledge,

Tim